Added rants about setting Auth-Type := EAP, and additional comments

[freeradius.git] / raddb / radiusd.conf.in

##
## radiusd.conf -- FreeRADIUS server configuration file.
##
##      http://www.freeradius.org/
##      $Id$
##

#       The location of other config files and
#       logfiles are declared in this file
#
#       Also general configuration for modules can be done
#       in this file, it is exported through the API to
#       modules that ask for it.
#
#       The configuration variables defined here are of the form ${foo}
#       They are local to this file, and do not change from request to
#       request.
#
#       The per-request variables are of the form %{Attribute-Name}, and
#       are taken from the values of the attribute in the incoming
#       request.  See 'doc/variables.txt' for more information.

prefix = @prefix@
exec_prefix = @exec_prefix@
sysconfdir = @sysconfdir@
localstatedir = @localstatedir@
sbindir = @sbindir@
logdir = @logdir@
raddbdir = @raddbdir@
radacctdir = @radacctdir@

#  Location of config and logfiles.
confdir = ${raddbdir}
run_dir = ${localstatedir}/run/radiusd

#
#  The logging messages for the server are appended to the
#  tail of this file.
#
log_file = ${logdir}/radius.log

#
# libdir: Where to find the rlm_* modules.
#
#   This should be automatically set at configuration time.
#
#   If the server builds and installs, but fails at execution time
#   with an 'undefined symbol' error, then you can use the libdir
#   directive to work around the problem.
#
#   The cause is usually that a library has been installed on your
#   system in a place where the dynamic linker CANNOT find it.  When
#   executing as root (or another user), your personal environment MAY
#   be set up to allow the dynamic linker to find the library.  When
#   executing as a daemon, FreeRADIUS MAY NOT have the same
#   personalized configuration.
#
#   To work around the problem, find out which library contains that symbol,
#   and add the directory containing that library to the end of 'libdir',
#   with a colon separating the directory names.  NO spaces are allowed.
#
#   e.g. libdir = /usr/local/lib:/opt/package/lib
#
#   You can also try setting the LD_LIBRARY_PATH environment variable
#   in a script which starts the server.
#
#   If that does not work, then you can re-configure and re-build the
#   server to NOT use shared libraries, via:
#
#       ./configure --disable-shared
#       make
#       make install
#
libdir = @libdir@

#  pidfile: Where to place the PID of the RADIUS server.
#
#  The server may be signalled while it's running by using this
#  file.
#
#  This file is written when ONLY running in daemon mode.
#
#  e.g.:  kill -HUP `cat /var/run/radiusd/radiusd.pid`
#
pidfile = ${run_dir}/radiusd.pid


# user/group: The name (or #number) of the user/group to run radiusd as.
#
#   If these are commented out, the server will run as the user/group
#   that started it.  In order to change to a different user/group, you
#   MUST be root ( or have root privleges ) to start the server.
#
#   We STRONGLY recommend that you run the server with as few permissions
#   as possible.  That is, if you're not using shadow passwords, the
#   user and group items below should be set to 'nobody'.
#
#    On SCO (ODT 3) use "user = nouser" and "group = nogroup".
#
#  NOTE that some kernels refuse to setgid(group) when the value of
#  (unsigned)group is above 60000; don't use group nobody on these systems!
#
#  On systems with shadow passwords, you might have to set 'group = shadow'
#  for the server to be able to read the shadow password file.  If you can
#  authenticate users while in debug mode, but not in daemon mode, it may be
#  that the debugging mode server is running as a user that can read the
#  shadow info, and the user listed below can not.
#
#user = nobody
#group = nobody

#  max_request_time: The maximum time (in seconds) to handle a request.
#
#  Requests which take more time than this to process may be killed, and
#  a REJECT message is returned.
#
#  WARNING: If you notice that requests take a long time to be handled,
#  then this MAY INDICATE a bug in the server, in one of the modules
#  used to handle a request, OR in your local configuration.
#
#  This problem is most often seen when using an SQL database.  If it takes
#  more than a second or two to receive an answer from the SQL database,
#  then it probably means that you haven't indexed the database.  See your
#  SQL server documentation for more information.
#
#  Useful range of values: 5 to 120
#
max_request_time = 30

#  delete_blocked_requests: If the request takes MORE THAN 'max_request_time'
#  to be handled, then maybe the server should delete it.
#
#  If you're running in threaded, or thread pool mode, this setting
#  should probably be 'no'.  Setting it to 'yes' when using a threaded
#  server MAY cause the server to crash!
#
delete_blocked_requests = no

#  cleanup_delay: The time to wait (in seconds) before cleaning up
#  a reply which was sent to the NAS.
#
#  The RADIUS request is normally cached internally for a short period
#  of time, after the reply is sent to the NAS.  The reply packet may be
#  lost in the network, and the NAS will not see it.  The NAS will then
#  re-send the request, and the server will respond quickly with the
#  cached reply.
#
#  If this value is set too low, then duplicate requests from the NAS
#  MAY NOT be detected, and will instead be handled as seperate requests.
#
#  If this value is set too high, then the server will cache too many
#  requests, and some new requests may get blocked.  (See 'max_requests'.)
#
#  Useful range of values: 2 to 10
#
cleanup_delay = 5

#  max_requests: The maximum number of requests which the server keeps
#  track of.  This should be 256 multiplied by the number of clients.
#  e.g. With 4 clients, this number should be 1024.
#
#  If this number is too low, then when the server becomes busy,
#  it will not respond to any new requests, until the 'cleanup_delay'
#  time has passed, and it has removed the old requests.
#
#  If this number is set too high, then the server will use a bit more
#  memory for no real benefit.
#
#  If you aren't sure what it should be set to, it's better to set it
#  too high than too low.  Setting it to 1000 per client is probably
#  the highest it should be.
#
#  Useful range of values: 256 to infinity
#
max_requests = 1024

#  bind_address:  Make the server listen on a particular IP address, and
#  send replies out from that address.  This directive is most useful
#  for machines with multiple IP addresses on one interface.
#
#  It can either contain "*", or an IP address, or a fully qualified
#  Internet domain name.  The default is "*"
#
bind_address = *

#  port: Allows you to bind FreeRADIUS to a specific port.
#
#  The default port that most NAS boxes use is 1645, which is historical.
#  RFC 2138 defines 1812 to be the new port.  Many new servers and
#  NAS boxes use 1812, which can create interoperability problems.
#
#  The port is defined here to be 0 so that the server will pick up
#  the machine's local configuration for the radius port, as defined
#  in /etc/services.
#
#  If you want to use the default RADIUS port as defined on your server,
#  (usually through 'grep radius /etc/services') set this to 0 (zero).
#
#  A port given on the command-line via '-p' over-rides this one.
#
port = 0

#  hostname_lookups: Log the names of clients or just their IP addresses
#  e.g., www.freeradius.org (on) or 206.47.27.232 (off).
#
#  The default is 'off' because it would be overall better for the net
#  if people had to knowingly turn this feature on, since enabling it
#  means that each client request will result in AT LEAST one lookup
#  request to the nameserver.   Enabling hostname_lookups will also
#  mean that your server may stop randomly for 30 seconds from time
#  to time, if the DNS requests take too long.
#
#  Turning hostname lookups off also means that the server won't block
#  for 30 seconds, if it sees an IP address which has no name associated
#  with it.
#
#  allowed values: {no, yes}
#
hostname_lookups = no

#  Core dumps are a bad thing.  This should only be set to 'yes'
#  if you're debugging a problem with the server.
#
#  allowed values: {no, yes}
#
allow_core_dumps = no

#  Regular expressions
#
#  These items are set at configure time.  If they're set to "yes",
#  then setting them to "no" turns off regular expression support.
#
#  If they're set to "no" at configure time, then setting them to "yes"
#  WILL NOT WORK.  It will give you an error.
#
regular_expressions     = @REGEX@
extended_expressions    = @REGEX_EXTENDED@

#  Log the full User-Name attribute, as it was found in the request.
#
# allowed values: {no, yes}
#
log_stripped_names = no

#  Log authentication requests to the log file.
#
#  allowed values: {no, yes}
#
log_auth = no

#  Log passwords with the authentication requests.
#  log_auth_badpass  - logs password if it's rejected
#  log_auth_goodpass - logs password if it's correct
#
#  allowed values: {no, yes}
#
log_auth_badpass = no
log_auth_goodpass = no

# usercollide:  Turn "username collision" code on and off.  See the
# "doc/duplicate-users" file
#
usercollide = no

# lower_user / lower_pass:  
# Lower case the username/password "before" or "after"
# attempting to authenticate.  
#
#  If "before", the server will first modify the request and then try
#  to auth the user.  If "after", the server will first auth using the
#  values provided by the user.  If that fails it will reprocess the
#  request after modifying it as you specify below.
#
#  This is as close as we can get to case insensitivity.  It is the
#  admin's job to ensure that the username on the auth db side is
#  *also* lowercase to make this work
#
# Default is 'no' (don't lowercase values)
# Valid values = "before" / "after" / "no"
#
lower_user = no
lower_pass = no

# nospace_user / nospace_pass:
#
#  Some users like to enter spaces in their username or password
#  incorrectly.  To save yourself the tech support call, you can
#  eliminate those spaces here:
#
# Default is 'no' (don't remove spaces)
# Valid values = "before" / "after" / "no" (explanation above)
#
nospace_user = no
nospace_pass = no

#  The program to execute to do concurrency checks.
checkrad = ${sbindir}/checkrad

# SECURITY CONFIGURATION
#
#  There may be multiple methods of attacking on the server.  This
#  section holds the configuration items which minimize the impact
#  of those attacks
#
security {
        #
        #  max_attributes: The maximum number of attributes
        #  permitted in a RADIUS packet.  Packets which have MORE
        #  than this number of attributes in them will be dropped.
        #
        #  If this number is set too low, then no RADIUS packets
        #  will be accepted.
        #
        #  If this number is set too high, then an attacker may be
        #  able to send a small number of packets which will cause
        #  the server to use all available memory on the machine.
        #
        #  Setting this number to 0 means "allow any number of attributes"
        max_attributes = 200

        #
        #  delayed_reject: When sending an Access-Reject, it can be
        #  delayed for a few seconds.  This may help slow down a DoS
        #  attack.  It also helps to slow down people trying to brute-force
        #  crack a users password.
        #
        #  Setting this number to 0 means "send rejects immediately"
        #
        #  If this number is set higher than 'cleanup_delay', then the
        #  rejects will be sent at 'cleanup_delay' time, when the request
        #  is deleted from the internal cache of requests.
        #
        #  Useful ranges: 1 to 5
        reject_delay = 1

        #
        #  status_server: Whether or not the server will respond
        #  to Status-Server requests.
        #
        #  Normally this should be set to "no", because they're useless.
        #  See: http://www.freeradius.org/rfc/rfc2865.html#Keep-Alives
        #
        #  However, certain NAS boxes may require them. 
        #
        #  When sent a Status-Server message, the server responds with
        #  and Access-Accept packet, containing a Reply-Message attribute,
        #  which is a string describing how long the server has been
        #  running.
        #
        status_server = no
}

# PROXY CONFIGURATION
#
#  proxy_requests: Turns proxying of RADIUS requests on or off.
#
#  The server has proxying turned on by default.  If your system is NOT
#  set up to proxy requests to another server, then you can turn proxying
#  off here.  This will save a small amount of resources on the server.
#
#  If you have proxying turned off, and your configuration files say
#  to proxy a request, then an error message will be logged.
#
#  To disable proxying, change the "yes" to "no", and comment the
#  $INCLUDE line.
#
#  allowed values: {no, yes}
#
proxy_requests  = yes
$INCLUDE  ${confdir}/proxy.conf


# CLIENTS CONFIGURATION
#
#  Client configuration is defined in "clients.conf".  
#

#  The 'clients.conf' file contains all of the information from the old
#  'clients' and 'naslist' configuration files.  We recommend that you
#  do NOT use 'client's or 'naslist', although they are still
#  supported.
#
#  Anything listed in 'clients.conf' will take precedence over the
#  information from the old-style configuration files.
#
$INCLUDE  ${confdir}/clients.conf


# SNMP CONFIGURATION
#
#  Snmp configuration is only valid if SNMP support was enabled
#  at compile time.
#
#  To enable SNMP querying of the server, set the value of the
#  'snmp' attribute to 'yes'
#
snmp    = no
$INCLUDE  ${confdir}/snmp.conf


# THREAD POOL CONFIGURATION
#
#  The thread pool is a long-lived group of threads which
#  take turns (round-robin) handling any incoming requests.
#
#  You probably want to have a few spare threads around,
#  so that high-load situations can be handled immediately.  If you
#  don't have any spare threads, then the request handling will
#  be delayed while a new thread is created, and added to the pool.
#
#  You probably don't want too many spare threads around,
#  otherwise they'll be sitting there taking up resources, and
#  not doing anything productive.
#
#  The numbers given below should be adequate for most situations.
#
thread pool {
        #  Number of servers to start initially --- should be a reasonable
        #  ballpark figure.
        start_servers = 5

        #  Limit on the total number of servers running.
        #
        #  If this limit is ever reached, clients will be LOCKED OUT, so it
        #  should NOT BE SET TOO LOW.  It is intended mainly as a brake to
        #  keep a runaway server from taking the system with it as it spirals
        #  down...
        #
        #  You may find that the server is regularly reaching the
        #  'max_servers' number of threads, and that increasing
        #  'max_servers' doesn't seem to make much difference.
        #
        #  If this is the case, then the problem is MOST LIKELY that
        #  your back-end databases are taking too long to respond, and
        #  are preventing the server from responding in a timely manner.
        #
        #  The solution is NOT do keep increasing the 'max_servers'
        #  value, but instead to fix the underlying cause of the
        #  problem: slow database, or 'hostname_lookups=yes'.
        #
        #  For more information, see 'max_request_time', above.
        #
        max_servers = 32

        #  Server-pool size regulation.  Rather than making you guess
        #  how many servers you need, FreeRADIUS dynamically adapts to
        #  the load it sees, that is, it tries to maintain enough
        #  servers to handle the current load, plus a few spare
        #  servers to handle transient load spikes.
        #
        #  It does this by periodically checking how many servers are
        #  waiting for a request.  If there are fewer than
        #  min_spare_servers, it creates a new spare.  If there are
        #  more than max_spare_servers, some of the spares die off.
        #  The default values are probably OK for most sites.
        #
        min_spare_servers = 3
        max_spare_servers = 10

        #  There may be memory leaks or resource allocation problems with
        #  the server.  If so, set this value to 300 or so, so that the
        #  resources will be cleaned up periodically.
        #
        #  This should only be necessary if there are serious bugs in the
        #  server which have not yet been fixed.
        #
        #  '0' is a special value meaning 'infinity', or 'the servers never
        #  exit'
        max_requests_per_server = 0
}

# MODULE CONFIGURATION
#
#  The names and configuration of each module is located in this section.
#
#  After the modules are defined here, they may be referred to by name,
#  in other sections of this configuration file.
#
modules {
        #
        #  Each module has a configuration as follows:
        #
        #       name [ instance ] {
        #               config_item = value
        #               ...
        #       }
        #
        #  The 'name' is used to load the 'rlm_name' library
        #  which implements the functionality of the module.
        #
        #  The 'instance' is optional.  To have two different instances
        #  of a module, it first must be referred to by 'name'.
        #  The different copies of the module are then created by
        #  inventing two 'instance' names, e.g. 'instance1' and 'instance2'
        #
        #  The instance names can then be used in later configuration
        #  INSTEAD of the original 'name'.  See the 'radutmp' configuration
        #  below for an example.
        #

        # PAP module to authenticate users based on their stored password
        #
        #  Supports multiple encryption schemes
        #  clear: Clear text
        #  crypt: Unix crypt
        #    md5: MD5 ecnryption
        #   sha1: SHA1 encryption.
        #  DEFAULT: crypt
        pap {
                encryption_scheme = crypt
        }

        # CHAP module
        #
        #  To authenticate requests containing a CHAP-Password attribute.
        #
        chap {
                authtype = CHAP
        }

        # Pluggable Authentication Modules
        #
        #  For Linux, see:
        #       http://www.kernel.org/pub/linux/libs/pam/index.html
        #
        #  WARNING: On many systems, the system PAM libraries have
        #           memory leaks!  We STRONGLY SUGGEST that you do not
        #           use PAM for authentication, due to those memory leaks.
        #
        pam {
                #
                #  The name to use for PAM authentication.
                #  PAM looks in /etc/pam.d/${pam_auth_name}
                #  for it's configuration.  See 'redhat/radiusd-pam'
                #  for a sample PAM configuration file.
                #
                #  Note that any Pam-Auth attribute set in the 'authorize'
                #  section will over-ride this one.
                #
                pam_auth = radiusd
        }

        # Unix /etc/passwd style authentication
        #
        unix {
                #
                #  Cache /etc/passwd, /etc/shadow, and /etc/group
                #
                #  The default is to NOT cache them.
                #
                #  For FreeBSD, you do NOT want to enable the cache,
                #  as it's password lookups are done via a database, so
                #  set this value to 'no'.
                #
                #  Some systems (e.g. RedHat Linux with pam_pwbd) can
                #  take *seconds* to check a password, from a passwd
                #  file containing 1000's of entries.  For those systems,
                #  you should set the cache value to 'yes', and set
                #  the locations of the 'passwd', 'shadow', and 'group'
                #  files, below.
                #
                # allowed values: {no, yes}
                cache = no

                # Reload the cache every 600 seconds (10mins). 0 to disable.
                cache_reload = 600

                #
                #  Define the locations of the normal passwd, shadow, and
                #  group files.
                #
                #  'shadow' is commented out by default, because not all
                #  systems have shadow passwords.
                #
                #  To force the module to use the system password functions,
                #  instead of reading the files, leave the following entries
                #  commented out.
                #
                #  This is required for some systems, like FreeBSD,
                #  and Mac OSX.
                #
                #       passwd = /etc/passwd
                #       shadow = /etc/shadow
                #       group = /etc/group


                #
                #  Where the 'wtmp' file is located.
                #  This should be moved to it's own module soon.
                #
                #  The only use for 'radlast'.  If you don't use
                #  'radlast', then you can comment out this item.
                #
                radwtmp = ${logdir}/radwtmp
        }

        #  Extensible Authentication Protocol
        #
        #  For all EAP related authentications 
        #
        #  Whatever you do, do NOT set 'Auth-Type := EAP'.  The server
        #  is smart enough to figure this out on its own.  The most
        #  common side effect of setting 'Auth-Type := EAP' is that the
        #  users then cannot use ANY other authentication method.
        #
        eap {
                #  Invoke the default supported EAP type when
                #  EAP-Identity response is received.
                #
                #  The incoming EAP messages DO NOT specify which EAP
                #  type they will be using, so it MUST be set here.
                #
                #  For now, only one default EAP type may be used at a time.
                #
                default_eap_type = md5

                #  Default expiry time to clean the EAP list, It is
                #  maintained to correlate the EAP-Response for each
                #  EAP-request sent.
                timer_expire     = 60

                #  There are many EAP types, but the server has support
                #  for only a limited subset.  If the server receives
                #  a request for an EAP type it does not support, then
                #  it normally rejects the request.  By setting this
                #  configuration to "yes", you can tell the server to
                #  instead keep processing the request.  Another module
                #  MUST then be configured to proxy the request to
                #  another RADIUS server which supports that EAP type.
                #
                #  If another module is NOT configured to handle the
                #  request, then the request will still end up being
                #  rejected.
                ignore_unknown_eap_types = no

                # Supported EAP-types

                #
                #  We do NOT recommend using EAP-MD5 authentication
                #  for wireless connections.  It is insecure, and does
                #  not provide for dynamic WEP keys.
                #
                md5 {
                }

                # Cisco LEAP
                #
                #  Cisco LEAP uses the MS-CHAP algorithm (but not
                #  the MS-CHAP attributes) to perform it's authentication.
                #
                #  As a result, LEAP *requires* access to the plain-text
                #  User-Password, or the NT-Password attributes.
                #  'System' authentication is impossible with LEAP.
                #
                leap {
                }

                ## EAP-TLS is highly experimental EAP-Type at the moment.  
                #       Please give feedback on the mailing list.
                #tls {
                #       private_key_password = password
                #       private_key_file = /path/filename

                        #  If Private key & Certificate are located in
                        #  the same file, then private_key_file &
                        #  certificate_file must contain the same file
                        #  name.
                #       certificate_file = /path/filename

                        #  Trusted Root CA list
                #       CA_file = /path/filename

                #       dh_file = /path/filename
                #       random_file = /path/filename

                        #
                        #  This can never exceed the size of a RADIUS
                        #  packet (4096 bytes), and is preferably half
                        #  that, to accomodate other attributes in
                        #  RADIUS packet.  On most APs the MAX packet
                        #  length is configured between 1500 - 1600
                        #  In these cases, fragment size should be
                        #  1024 or less.
                        #
                #       fragment_size = 1024

                        #  include_length is a flag which is
                        #  by default set to yes If set to
                        #  yes, Total Length of the message is
                        #  included in EVERY packet we send.
                        #  If set to no, Total Length of the
                        #  message is included ONLY in the
                        #  First packet of a fragment series.
                        #
                #       include_length = yes

                        #  Check the Certificate Revocation List
                        #  
                        #  1) Copy CA certificates and CRLs to same directory.
                        #  2) Execute 'c_rehash <CA certs&CRLs Directory>'.
                        #    'c_rehash' is OpenSSL's command.
                        #  3) Add 'CA_path=<CA certs&CRLs directory>'
                        #      to radiusd.conf's tls section.
                        #  4) uncomment the line below.
                        #  5) Restart radiusd
                #       check_crl = yes
                #}

                #  The TTLS module implements the EAP-TTLS protocol,
                #  which can be described as EAP inside of Diameter,
                #  inside of TLS, inside of EAP, inside of RADIUS...
                #
                #  Surprisingly, it works quite well.
                #
                #ttls {
                        #  The tunneled EAP session needs a default
                        #  EAP type which is separate from the one for
                        #  the non-tunneled EAP module.  Inside of the
                        #  TTLS tunnel, we recommend using EAP-MD5.
                        #  If the request does not contain an EAP
                        #  conversation, then this configuration entry
                        #  is ignored.
                #       default_eap_type = md5

                        #  The tunneled authentication request does
                        #  not usually contain useful attributes
                        #  like 'Calling-Station-Id', etc.  These
                        #  attributes are outside of the tunnel,
                        #  and normally unavailable to the tunneled
                        #  authentication request.
                        #
                        #  By setting this configuration entry to
                        #  'yes', any attribute which NOT in the
                        #  tunneled authentication request, but
                        #  which IS available outside of the tunnel,
                        #  is copied to the tunneled request.
                        #
                        # allowed values: {no, yes}
                #       copy_request_to_tunnel = no

                        #  The reply attributes sent to the NAS are
                        #  usually based on the name of the user
                        #  'outside' of the tunnel (usually
                        #  'anonymous').  If you want to send the
                        #  reply attributes based on the user name
                        #  inside of the tunnel, then set this
                        #  configuration entry to 'yes', and the reply
                        #  to the NAS will be taken from the reply to
                        #  the tunneled request.
                        #
                        # allowed values: {no, yes}
                #       use_tunneled_reply = no                 
                           
                #}

                #
                #  The tunneled EAP session needs a default EAP type
                #  which is separate from the one for the non-tunneled
                #  EAP module.  Inside of the TLS/PEAP tunnel, we
                #  recommend using EAP-MS-CHAPv2.
                #
                # peap {
                        #  The tunneled EAP session needs a default
                        #  EAP type which is separate from the one for
                        #  the non-tunneled EAP module.  Inside of the
                        #  PEAP tunnel, we recommend using MS-CHAPv2,
                        #  as that is the default type supported by
                        #  Windows clients.
                #       default_eap_type = mschapv2
                #}

                #
                #  This takes no configuration.
                #
                #  Note that it is the EAP MS-CHAPv2 sub-module, not
                #  the main 'mschap' module.
                #
                #  Note also that in order for this sub-module to work,
                #  the main 'mschap' module MUST ALSO be configured.
                #
                #  This module is the *Microsoft* implementation of MS-CHAPv2
                #  in EAP.  There is another (incompatible) implementation
                #  of MS-CHAPv2 in EAP by Cisco, which FreeRADIUS does not
                #  currently support.
                #
                mschapv2 {
                }
        }

        # Microsoft CHAP authentication
        #
        #  This module supports MS-CHAP and MS-CHAPv2 authentication.
        #  It also enforces the SMB-Account-Ctrl attribute.
        #
        mschap {
                #
                #  As of 0.9, the mschap module does NOT support
                #  reading from /etc/smbpasswd.
                #
                #  If you are using /etc/smbpasswd, see the 'passwd'
                #  module for an example of how to use /etc/smbpasswd

                # authtype value, if present, will be used
                # to overwrite (or add) Auth-Type during
                # authorization. Normally should be MS-CHAP
                authtype = MS-CHAP
                
                # if use_mppe is not set to no mschap will
                # add MS-CHAP-MPPE-Keys for MS-CHAPv1 and
                # MS-MPPE-Recv-Key/MS-MPPE-Send-Key for MS-CHAPv2
                #       use_mppe = no

                # if mppe is enabled require_encryption makes
                # encryption moderate
                #       require_encryption = yes

                # require_strong always requires 128 bit key
                # encryption
                #       require_strong = yes
        }

        # Lightweight Directory Access Protocol (LDAP)
        #
        #  This module definition allows you to use LDAP for
        #  authorization and authentication (Auth-Type := LDAP)
        #
        #  See doc/rlm_ldap for description of configuration options 
        #  and sample authorize{} and authenticate{} blocks 
        ldap {
                server = "ldap.your.domain"
                # identity = "cn=admin,o=My Org,c=UA"
                # password = mypass
                basedn = "o=My Org,c=UA"
                filter = "(uid=%{Stripped-User-Name:-%{User-Name}})"
                # base_filter = "(objectclass=radiusprofile)"

                # set this to 'yes' to use TLS encrypted connections
                # to the LDAP database by using the StartTLS extended
                # operation.
                # The StartTLS operation is supposed to be used with normal
                # ldap connections instead of using ldaps (port 689) connections
                start_tls = no

                # default_profile = "cn=radprofile,ou=dialup,o=My Org,c=UA"
                # profile_attribute = "radiusProfileDn"
                access_attr = "dialupAccess"

                # Mapping of RADIUS dictionary attributes to LDAP
                # directory attributes.
                dictionary_mapping = ${raddbdir}/ldap.attrmap

                ldap_connections_number = 5

                #
                # NOTICE: The password_header directive is NOT case insensitive
                #
                # password_header = "{clear}"
                #
                #  The server can usually figure this out on its own, and pull
                #  the correct User-Password or NT-Password from the database.
                #
                #  Note that NT-Passwords MUST be stored as a 32-digit hex
                #  string, and MUST start off with "0x", such as:
                #
                #       0x000102030405060708090a0b0c0d0e0f
                #
                #  Without the leading "0x", NT-Passwords will not work.
                #  This goes for NT-Passwords stored in SQL, too.
                #
                # password_attribute = userPassword
                # groupname_attribute = cn
                # groupmembership_filter = "(|(&(objectClass=GroupOfNames)(member=%{Ldap-UserDn}))(&(objectClass=GroupOfUniqueNames)(uniquemember=%{Ldap-UserDn})))"
                # groupmembership_attribute = radiusGroupName
                timeout = 4
                timelimit = 3
                net_timeout = 1
                # compare_check_items = yes
                # access_attr_used_for_allow = yes
        }

        # passwd module allows to do authorization via any passwd-like
        # file and to extract any attributes from these modules
        #
        # parameters are:
        #   filename - path to filename
        #   format - format for filename record. This parameters
        #            correlates record in the passwd file and RADIUS
        #            attributes.
        #
        #            Field marked as '*' is key field. That is, the parameter
        #            with this name from the request is used to search for
        #            the record from passwd file
        #            Attribute marked as '=' is added to reply_itmes instead
        #            of default configure_itmes
        #            Attribute marked as '~' is added to request_items
        #
        #            Field marked as ',' may contain a comma separated list
        #            of attributes.
        #   authtype - if record found this Auth-Type is used to authenticate
        #            user
        #   hashsize - hashtable size. If 0 or not specified records are not
        #            stored in memory and file is red on every request.
        #   allowmultiplekeys - if few records for every key are allowed
        #   ignorenislike - ignore NIS-related records
        #   delimiter - symbol to use as a field separator in passwd file,
        #            for format ':' symbol is always used. '\0', '\n' are
        #            not allowed 
        #

        #  An example configuration for using /etc/smbpasswd.
        #
        #passwd etc_smbpasswd {
        #       filename = /etc/smbpasswd
        #       format = "*User-Name::LM-Password:NT-Password:SMB-Account-CTRL-TEXT::"
        #       authtype = MS-CHAP
        #       hashsize = 100
        #       ignorenislike = no
        #       allowmultiplekeys = no
        #}

        #  Similar configuration, for the /etc/group file. Adds a Group-Name
        #  attribute for every group that the user is member of.
        #
        #passwd etc_group {
        #       filename = /etc/group
        #       format = "=Group-Name:::*,User-Name"
        #       hashsize = 50
        #       ignorenislike = yes
        #       allowmultiplekeys = yes
        #       delimiter = ":"
        #}

        # Realm module, for proxying.
        #
        #  You can have multiple instances of the realm module to
        #  support multiple realm syntaxs at the same time.  The
        #  search order is defined the order in the authorize and
        #  preacct blocks after the module config block.
        #
        #  Two config options:
        #       format     -  must be 'prefix' or 'suffix'
        #       delimiter  -  must be a single character

        #  'realm/username'
        #
        #  Using this entry, IPASS users have their realm set to "IPASS".
        realm realmslash {
                format = prefix
                delimiter = "/"
        }

        #  'username@realm'
        #
        realm suffix {
                format = suffix
                delimiter = "@"
        }

        #  'username%realm'
        #
        realm realmpercent {
                format = suffix
                delimiter = "%"
        }
        
        #  rewrite arbitrary packets.  Useful in accounting and authorization.
        #
        ## This module is highly experimental at the moment.  Please give 
        ## feedback to the mailing list.
        #
        #  The module can also use the Rewrite-Rule attribute. If it
        #  is set and matches the name of the module instance, then
        #  that module instance will be the only one which runs.
        #
        #  Also if new_attribute is set to yes then a new attribute
        #  will be created containing the value replacewith and it
        #  will be added to searchin (packet, reply or config).
        # searchfor,ignore_case and max_matches will be ignored in that case.

        #
        #attr_rewrite sanecallerid {
        #       attribute = Called-Station-Id
                # may be "packet", "reply", or "config"
        #       searchin = packet
        #       searchfor = "[+ ]"
        #       replacewith = ""
        #       ignore_case = no
        #       new_attribute = no
        #       max_matches = 10
        #       ## If set to yes then the replace string will be appended to the original string
        #       append = no
        #}

        # Preprocess the incoming RADIUS request, before handing it off
        # to other modules.
        #
        #  This module processes the 'huntgroups' and 'hints' files.
        #  In addition, it re-writes some weird attributes created
        #  by some NASes, and converts the attributes into a form which
        #  is a little more standard.
        #
        preprocess {
                huntgroups = ${confdir}/huntgroups
                hints = ${confdir}/hints

                # This hack changes Ascend's wierd port numberings
                # to standard 0-??? port numbers so that the "+" works
                # for IP address assignments.
                with_ascend_hack = no
                ascend_channels_per_line = 23

                # Windows NT machines often authenticate themselves as
                # NT_DOMAIN\username
                #
                # If this is set to 'yes', then the NT_DOMAIN portion
                # of the user-name is silently discarded.
                with_ntdomain_hack = no

                # Specialix Jetstream 8500 24 port access server.
                #
                # If the user name is 10 characters or longer, a "/"
                # and the excess characters after the 10th are
                # appended to the user name.
                #
                # If you're not running that NAS, you don't need
                # this hack.
                with_specialix_jetstream_hack = no

                # Cisco sends it's VSA attributes with the attribute
                # name *again* in the string, like:
                #
                #   H323-Attribute = "h323-attribute=value".
                #
                # If this configuration item is set to 'yes', then
                # the redundant data in the the attribute text is stripped
                # out.  The result is:
                #
                #  H323-Attribute = "value"
                #
                # If you're not running a Cisco NAS, you don't need
                # this hack.
                with_cisco_vsa_hack = no
        }

        # Livingston-style 'users' file
        #
        files {
                usersfile = ${confdir}/users
                acctusersfile = ${confdir}/acct_users

                #  If you want to use the old Cistron 'users' file
                #  with FreeRADIUS, you should change the next line
                #  to 'compat = cistron'.  You can the copy your 'users'
                #  file from Cistron.
                compat = no
        }

        # Write a detailed log of all accounting records received.
        #
        detail {
                #  Note that we do NOT use NAS-IP-Address here, as
                #  that attribute MAY BE from the originating NAS, and
                #  NOT from the proxy which actually sent us the
                #  request.  The Client-IP-Address attribute is ALWAYS
                #  the address of the client which sent us the
                #  request.
                #
                #  The following line creates a new detail file for
                #  every radius client (by IP address or hostname).
                #  In addition, a new detail file is created every
                #  day, so that the detail file doesn't have to go
                #  through a 'log rotation'
                #
                #  If your detail files are large, you may also want
                #  to add a ':%H' (see doc/variables.txt) to the end
                #  of it, to create a new detail file every hour, e.g.:
                #
                #   ..../detail-%Y%m%d:%H
                #
                #  This will create a new detail file for every hour.
                #
                detailfile = ${radacctdir}/%{Client-IP-Address}/detail-%Y%m%d

                #
                #  The Unix-style permissions on the 'detail' file.
                #
                #  The detail file often contains secret or private
                #  information about users.  So by keeping the file
                #  permissions restrictive, we can prevent unwanted
                #  people from seeing that information.
                detailperm = 0600
        }

        #
        #  Many people want to log authentication requests.
        #  Rather than modifying the server core to print out more
        #  messages, we can use a different instance of the 'detail'
        #  module, to log the authentication requests to a file.
        #
        #  You will also need to un-comment the 'auth_log' line
        #  in the 'authorize' section, below.
        #
        # detail auth_log {
                # detailfile = ${radacctdir}/%{Client-IP-Address}/auth-detail-%Y%m%d

                #
                #  This MUST be 0600, otherwise anyone can read
                #  the users passwords!
                # detailperm = 0600
        # }

        #
        #  This module logs authentication reply packets sent
        #  to a NAS.  Both Access-Accept and Access-Reject packets
        #  are logged.
        #
        #  You will also need to un-comment the 'reply_log' line
        #  in the 'post-auth' section, below.
        #
        # detail reply_log {
                # detailfile = ${radacctdir}/%{Client-IP-Address}/reply-detail-%Y%m%d

                #
                #  This MUST be 0600, otherwise anyone can read
                #  the users passwords!
                # detailperm = 0600
        # }

        #
        #  This module logs packets proxied to a home server.
        #
        #  You will also need to un-comment the 'pre_proxy_log' line
        #  in the 'pre-proxy' section, below.
        #
        # detail pre_proxy_log {
                # detailfile = ${radacctdir}/%{Client-IP-Address}/pre-proxy-detail-%Y%m%d

                #
                #  This MUST be 0600, otherwise anyone can read
                #  the users passwords!
                # detailperm = 0600
        # }

        #
        #  This module logs response packets from a home server.
        #
        #  You will also need to un-comment the 'post_proxy_log' line
        #  in the 'post-post' section, below.
        #
        # detail post_proxy_log {
                # detailfile = ${radacctdir}/%{Client-IP-Address}/post-proxy-detail-%Y%m%d

                #
                #  This MUST be 0600, otherwise anyone can read
                #  the users passwords!
                # detailperm = 0600
        # }

        # Create a unique accounting session Id.  Many NASes re-use or
        # repeat values for Acct-Session-Id, causing no end of
        # confusion.
        #
        #  This module will add a (probably) unique session id 
        #  to an accounting packet based on the attributes listed
        #  below found in the packet.  See doc/rlm_acct_unique for
        #  more information.
        #
        acct_unique {
                key = "User-Name, Acct-Session-Id, NAS-IP-Address, Client-IP-Address, NAS-Port-Id"
        }


        #  Include another file that has the SQL-related configuration.
        #  This is another file only because it tends to be big.
        #
        #  The following configuration file is for use with MySQL.
        #
        #  For Postgresql, use:         ${confdir}/postgresql.conf
        #  For MS-SQL, use:             ${confdir}/mssql.conf
        #  For Oracle, use:             ${confdir}/oraclesql.conf
        #
        $INCLUDE  ${confdir}/sql.conf

        #  Write a 'utmp' style file, of which users are currently
        #  logged in, and where they've logged in from.
        #
        #  This file is used mainly for Simultaneous-Use checking,
        #  and also 'radwho', to see who's currently logged in.
        #
        radutmp {
                #  Where the file is stored.  It's not a log file,
                #  so it doesn't need rotating.
                #
                filename = ${logdir}/radutmp

                #  The field in the packet to key on for the
                #  'user' name,  If you have other fields which you want
                #  to use to key on to control Simultaneous-Use,
                #  then you can use them here.
                #
                #  Note, however, that the size of the field in the
                #  'utmp' data structure is small, around 32
                #  characters, so that will limit the possible choices
                #  of keys.
                #
                username = %{User-Name}

                #  Whether or not we want to treat "user" the same
                #  as "USER", or "User".  Some systems have problems
                #  with case sensitivity, so this should be set to
                #  'no' to enable the comparisons of the key attribute
                #  to be case insensitive.
                #
                case_sensitive = yes

                #  Accounting information may be lost, so the user MAY
                #  have logged off of the NAS, but we haven't noticed.
                #  If so, we can verify this information with the NAS,
                #
                #  If we want to believe the 'utmp' file, then this
                #  configuration entry can be set to 'no'.
                #
                check_with_nas = yes            

                # Set the file permissions, as the contents of this file
                # are usually private.
                perm = 0600

                callerid = "yes"
        }

        # "Safe" radutmp - does not contain caller ID, so it can be
        # world-readable, and radwho can work for normal users, without
        # exposing any information that isn't already exposed by who(1).
        #
        # This is another 'instance' of the radutmp module, but it is given
        # then name "sradutmp" to identify it later in the "accounting"
        # section.
        radutmp sradutmp {
                filename = ${logdir}/sradutmp
                perm = 0644
                callerid = "no"
        }

        # attr_filter - filters the attributes received in replies from
        # proxied servers, to make sure we send back to our RADIUS client
        # only allowed attributes.
        attr_filter {
                attrsfile = ${confdir}/attrs
        }

        #  counter module:
        #  This module takes an attribute (count-attribute).
        #  It also takes a key, and creates a counter for each unique
        #  key.  The count is incremented when accounting packets are
        #  received by the server.  The value of the increment depends
        #  on the attribute type.
        #  If the attribute is Acct-Session-Time or of an integer type we add the
        #  value of the attribute. If it is anything else we increase the
        #  counter by one.
        #
        #  The 'reset' parameter defines when the counters are all reset to
        #  zero.  It can be hourly, daily, weekly, monthly or never.
        #
        #  hourly: Reset on 00:00 of every hour
        #  daily: Reset on 00:00:00 every day
        #  weekly: Reset on 00:00:00 on sunday
        #  monthly: Reset on 00:00:00 of the first day of each month
        #
        #  It can also be user defined. It should be of the form:
        #  num[hdwm] where:
        #  h: hours, d: days, w: weeks, m: months
        #  If the letter is ommited days will be assumed. In example:
        #  reset = 10h (reset every 10 hours)
        #  reset = 12  (reset every 12 days)
        #
        #
        #  The check-name attribute defines an attribute which will be
        #  registered by the counter module and can be used to set the
        #  maximum allowed value for the counter after which the user
        #  is rejected.
        #  Something like:
        #
        #  DEFAULT Max-Daily-Session := 36000
        #          Fall-Through = 1
        #
        #  You should add the counter module in the instantiate
        #  section so that it registers check-name before the files
        #  module reads the users file.
        #
        #  If check-name is set and the user is to be rejected then we
        #  send back a Reply-Message and we log a Failure-Message in
        #  the radius.log
        #  If the count attribute is Acct-Session-Time then on each login
        #  we send back the remaining online time as a Session-Timeout attribute
        #
        #  The counter-name can also be used instead of using the check-name
        #  like below:
        #
        #  DEFAULT  Daily-Session-Time > 3600, Auth-Type = Reject
        #      Reply-Message = "You've used up more than one hour today"
        #
        #  The allowed-servicetype attribute can be used to only take
        #  into account specific sessions. For example if a user first
        #  logs in through a login menu and then selects ppp there will
        #  be two sessions. One for Login-User and one for Framed-User
        #  service type. We only need to take into account the second one.
        #
        #  The module should be added in the instantiate, authorize and
        #  accounting sections.  Make sure that in the authorize
        #  section it comes after any module which sets the
        #  'check-name' attribute.
        #
        counter daily {
                filename = ${raddbdir}/db.daily
                key = User-Name
                count-attribute = Acct-Session-Time
                reset = daily
                counter-name = Daily-Session-Time
                check-name = Max-Daily-Session
                allowed-servicetype = Framed-User
                cache-size = 5000
        }

        # The "always" module is here for debugging purposes. Each
        # instance simply returns the same result, always, without
        # doing anything.
        always fail {
                rcode = fail
        }
        always reject {
                rcode = reject
        }
        always ok {
                rcode = ok
                simulcount = 0
                mpp = no
        }

        #
        #  The 'expression' module currently has no configuration.
        expr {
        }

        #
        #  The 'digest' module currently has no configuration.
        #
        #  "Digest" authentication against a Cisco SIP server.
        #  See 'doc/rfc/draft-sterman-aaa-sip-00.txt' for details
        #  on performing digest authentication for Cisco SIP servers.
        #
        digest {
        }

        #
        #  Execute external programs
        #
        #  The first example is useful only for 'xlat'.  To use it,
        #  put 'exec' into the 'instantiate' section.  You can then
        #  do dynamic translation of attributes like:
        #
        #  Attribute-Name = `{%exec:/path/to/program args}`
        #
        #  The value of the attribute will be replaced with the output
        #  of the program which is executed.  Due to RADIUS protocol
        #  limitations, any output over 253 bytes will be ignored.
        #
        #  The RADIUS attributes from the user request will be placed
        #  into environment variables of the executed program, as
        #  described in 'doc/variables.txt'
        #
        exec {
                wait = yes
                input_pairs = request
        }

        #
        #  This is a more general example of the execute module.
        #
        #  If you wish to execute an external program in more than
        #  one section (e.g. 'authorize', 'pre_proxy', etc), then it
        #  is probably best to define a different instance of the
        #  'exec' module for every section.     
        #       
        exec echo {
                #
                #  Wait for the program to finish.
                #
                #  If we do NOT wait, then the program is "fire and
                #  forget", and any output attributes from it are ignored.
                #
                #  If we are looking for the program to output
                #  attributes, and want to add those attributes to the
                #  request, then we MUST wait for the program to
                #  finish, and therefore set 'wait=yes'
                #
                # allowed values: {no, yes}
                wait = yes

                #
                #  The name of the program to execute, and it's
                #  arguments.  Dynamic translation is done on this
                #  field, so things like the following example will
                #  work.
                #
                program = "/bin/echo %{User-Name}"

                #
                #  The attributes which are placed into the
                #  environment variables for the program.
                #
                #  Allowed values are:
                #
                #       request         attributes from the request
                #       config          attributes from the configuration items list
                #       reply           attributes from the reply
                #       proxy-request   attributes from the proxy request
                #       proxy-reply     attributes from the proxy reply
                #
                #  Note that some attributes may not exist at some
                #  stages.  e.g. There may be no proxy-reply
                #  attributes if this module is used in the
                #  'authorize' section.
                #
                input_pairs = request

                #
                #  Where to place the output attributes (if any) from
                #  the executed program.  The values allowed, and the
                #  restrictions as to availability, are the same as
                #  for the input_pairs.
                #
                output_pairs = reply

                #
                #  When to execute the program.  If the packet
                #  type does NOT match what's listed here, then
                #  the module does NOT execute the program.
                #
                #  For a list of allowed packet types, see
                #  the 'dictionary' file, and look for VALUEs
                #  of the Packet-Type attribute.
                #
                #  By default, the module executes on ANY packet.
                #  Un-comment out the following line to tell the
                #  module to execute only if an Access-Accept is
                #  being sent to the NAS.
                #
                #packet_type = Access-Accept
        }

        #  Do server side ip pool management. Should be added in post-auth and
        #  accounting sections.
        #
        #  The module also requires the existance of the Pool-Name
        #  attribute. That way the administrator can add the Pool-Name
        #  attribute in the user profiles and use different pools
        #  for different users. The Pool-Name attribute is a *check* item not
        #  a reply item.
        #
        # Example:
        # radiusd.conf: ippool students { [...] }
        # users file  : DEFAULT Group == students, Pool-Name := "students"
        #
        # ********* IF YOU CHANGE THE RANGE PARAMETERS YOU MUST THEN ERASE THE DB FILES *******
        #
        ippool main_pool {

                #  range-start,range-stop: The start and end ip
                #  addresses for the ip pool
                range-start = 192.168.1.1
                range-stop = 192.168.3.254

                #  netmask: The network mask used for the ip's
                netmask = 255.255.255.0

                #  cache-size: The gdbm cache size for the db
                #  files. Should be equal to the number of ip's
                #  available in the ip pool
                cache-size = 800

                # session-db: The main db file used to allocate ip's to clients
                session-db = ${raddbdir}/db.ippool

                # ip-index: Helper db index file used in multilink
                ip-index = ${raddbdir}/db.ipindex

                # override: Will this ippool override a Framed-IP-Address already set
                override = no
        }

        # ANSI X9.9 token support.  Not included by default.
        # $INCLUDE  ${confdir}/x99.conf

}

# Instantiation
#
#  This section orders the loading of the modules.  Modules
#  listed here will get loaded BEFORE the later sections like
#  authorize, authenticate, etc. get examined.
#
#  This section is not strictly needed.  When a section like
#  authorize refers to a module, it's automatically loaded and
#  initialized.  However, some modules may not be listed in any
#  of the following sections, so they can be listed here.
#
#  Also, listing modules here ensures that you have control over
#  the order in which they are initalized.  If one module needs
#  something defined by another module, you can list them in order
#  here, and ensure that the configuration will be OK.
#
instantiate {
        #
        #  The expression module doesn't do authorization,
        #  authentication, or accounting.  It only does dynamic
        #  translation, of the form:
        #
        #       Session-Timeout = `%{expr:2 + 3}`
        #
        #  So the module needs to be instantiated, but CANNOT be
        #  listed in any other section.  See 'doc/rlm_expr' for
        #  more information.
        #
        expr

        #
        # We add the counter module here so that it registers
        # the check-name attribute before any module which sets
        # it
#       daily
}

#  Authorization. First preprocess (hints and huntgroups files),
#  then realms, and finally look in the "users" file.
#
#  The order of the realm modules will determine the order that
#  we try to find a matching realm.
#
#  Make *sure* that 'preprocess' comes before any realm if you 
#  need to setup hints for the remote radius server
authorize {
        #
        #  The preprocess module takes care of sanitizing some bizarre
        #  attributes in the request, and turning them into attributes
        #  which are more standard.
        #
        #  It takes care of processing the 'raddb/hints' and the
        #  'raddb/huntgroups' files.
        #
        #  It also adds a Client-IP-Address attribute to the request.
        preprocess

        #
        #  If you want to have a log of authentication requests,
        #  un-comment the following line, and the 'detail auth_log'
        #  section, above.
#       auth_log
        
        #
        #  The chap module will set 'Auth-Type := CHAP' if we are
        #  handling a CHAP request and Auth-Type has not already been set
        chap

#       attr_filter

        #
        #  This module takes care of EAP-MD5, EAP-TLS, and EAP-LEAP
        #  authentication.
        eap

        #
        #  If you have a Cisco SIP server authenticating against
        #  FreeRADIUS, uncomment the following line.
        # digest

        #
        #  Look for IPASS style 'realm/', and if not found, look for
        #  '@realm', and decide whether or not to proxy, based on
        #  that.
#       realmslash
        suffix

        #
        #  Read the 'users' file
        files

        #
        #  If you are using /etc/smbpasswd, and are also doing
        #  mschap authentication, the un-comment this line, and
        #  configure the 'etc_smbpasswd' module, above.
#       etc_smbpasswd

        #
        #  If the users are logging in with an MS-CHAP-Challenge
        #  attribute for authentication, the mschap module will find
        #  the MS-CHAP-Challenge attribute, and add 'Auth-Type := MS-CHAP'
        #  to the request, which will cause the server to then use
        #  the mschap module for authentication.
        mschap


# The ldap module will set Auth-Type to LDAP if it has not already been set
#       ldap
#       daily
}


# Authentication.
#
#  This section lists which modules are available for authentication.
#  Note that it does NOT mean 'try each module in order'.  It means
#  that you have to have a module from the 'authorize' section add
#  a configuration attribute 'Auth-Type := FOO'.  That authentication type
#  is then used to pick the apropriate module from the list below.
#
#  The default Auth-Type is Local.  That is, whatever is not included inside
# an authtype section will be called only if Auth-Type is set to Local.
#
# So you should do the following:
# - Set Auth-Type to an appropriate value in the authorize modules above.
#   For example, the chap module will set Auth-Type to CHAP, ldap to LDAP, etc.
# - After that create corresponding authtype sections in the
#   authenticate section below and call the appropriate modules.
authenticate {
        #
        #  PAP authentication, when a back-end database listed
        #  in the 'authorize' section supplies a password.  The
        #  password can be clear-text, or encrypted.
        Auth-Type PAP {
                pap
        }

        #
        #  Most people want CHAP authentication
        #  A back-end database listed in the 'authorize' section
        #  MUST supply a CLEAR TEXT password.  Encrypted passwords
        #  won't work.
        Auth-Type CHAP {
                chap
        }

        #
        #  MSCHAP authentication.
        Auth-Type MS-CHAP {
                mschap
        }

        #
        #  If you have a Cisco SIP server authenticating against
        #  FreeRADIUS, uncomment the following line.
        # digest

        #
        #  Pluggable Authentication Modules.
#       pam

        #
        #  See 'man getpwent' for information on how the 'unix'
        #  module checks the users password.  Note that packets
        #  containing CHAP-Password attributes CANNOT be authenticated
        #  against /etc/passwd!  See the FAQ for details.
        #  
        unix

        # Uncomment it if you want to use ldap for authentication
#       Auth-Type LDAP {
#               ldap
#       }


        #
        #  Allow EAP authentication.
        eap
}


#
#  Pre-accounting.  Decide which accounting type to use.
#
preacct {
        preprocess

        #
        #  Look for IPASS-style 'realm/', and if not found, look for
        #  '@realm', and decide whether or not to proxy, based on
        #  that.
        #
        #  Accounting requests are generally proxied to the same
        #  home server as authentication requests.
#       realmslash
        suffix

        #
        #  Read the 'acct_users' file
        files
}

#
#  Accounting.  Log the accounting data.
#
accounting {
        #
        #  Ensure that we have a semi-unique identifier for every
        #  request, and many NAS boxes are broken.
        acct_unique

        #
        #  Create a 'detail'ed log of the packets.
        #  Note that accounting requests which are proxied
        #  are also logged in the detail file.
        detail
#       daily

        unix            # wtmp file

        #
        #  For Simultaneous-Use tracking.
        #
        #  Due to packet losses in the network, the data here
        #  may be incorrect.  There's little we can do about it.
        radutmp
#       sradutmp

        #  Return an address to the IP Pool when we see a stop record.
#       main_pool
}


#  Session database, used for checking Simultaneous-Use. Either the radutmp 
#  or rlm_sql module can handle this.
#  The rlm_sql module is *much* faster
session {
        radutmp
#       sql
}


#  Post-Authentication
#  Once we KNOW that the user has been authenticated, there are
#  additional steps we can take.
post-auth {
        #  Get an address from the IP Pool.
#       main_pool

        #
        #  If you want to have a log of authentication replies,
        #  un-comment the following line, and the 'detail reply_log'
        #  section, above.
#       reply_log
}

#
#  When the server decides to proxy a request to a home server,
#  the proxied request is first passed through the pre-proxy
#  stage.  This stage can re-write the request, or decide to
#  cancel the proxy.
#
#  Only a few modules currently have this method.
#
pre-proxy {
#       attr_rewrite

        #  If you want to have a log of packets proxied to a home
        #  server, un-comment the following line, and the
        #  'detail pre_proxy_log' section, above.
#       pre_proxy_log
}

#
#  When the server receives a reply to a request it proxied
#  to a home server, the request may be massaged here, in the
#  post-proxy stage.
#
post-proxy {
        #

        #  If you want to have a log of replies from a home server,
        #  un-comment the following line, and the 'detail post_proxy_log'
        #  section, above.
#       post_proxy_log

#       attr_rewrite

        #  Uncomment the following line if you want to filter replies from
        #  remote proxies based on the rules defined in the 'attrs' file.

#       attr_filter

        #
        #  If you are proxing LEAP, you MUST configure the EAP
        #  module, and you MUST list it here, in the post-proxy
        #  stage.
        #
        #  You MUST also use the 'nostrip' option in the 'realm'
        #  configuration.  Otherwise, the User-Name attribute
        #  in the proxied request will not match the user name
        #  hidden inside of the EAP packet, and the end server will
        #  reject the EAP request.
        #
        eap
}