# -*- text -*- ###################################################################### # # Sample configuration file for dynamically updating the list # of RADIUS clients at run time. # # Everything is keyed off of a client "network". (e.g. 192.168/16) # This configuration lets the server know that clients within # that network are defined dynamically. # # When the server receives a packet from an unknown IP address # within that network, it tries to find a dynamic definition # for that client. If the definition is found, the IP address # (and other configuration) is added to the server's internal # cache of "known clients", with a configurable lifetime. # # Further packets from that IP address result in the client # definition being found in the cache. Once the lifetime is # reached, the client definition is deleted, and any new requests # from that client are looked up as above. # # If the dynamic definition is not found, then the request is # treated as if it came from an unknown client. i.e. It is # silently discarded. # # As part of protection from Denial of Service (DoS) attacks, # the server will add only one new client per second. This CANNOT # be changed, and is NOT configurable. # # $Id$ # ###################################################################### # # Define a network where clients may be dynamically defined. client dynamic { ipaddr = 192.168.0.0 # # You MUST specify a netmask! # IPv4 /32 or IPv6 /128 are NOT allowed! netmask = 16 # # Any other configuration normally found in a "client" # entry can be used here. # # A shared secret does NOT have to be defined. It can # be left out. # # Define the virtual server used to discover dynamic clients. dynamic_clients = dynamic_client_server # # The directory where client definitions are stored. This # needs to be used ONLY if the client definitions are stored # in flat-text files. Each file in that directory should be # ONE and only one client definition. The name of the file # should be the IP address of the client. # # If you are storing clients in SQL, this entry should not # be used. # directory = ${confdir}/dynamic-clients/ # # Define the lifetime (in seconds) for dynamic clients. # They will be cached for this lifetime, and deleted afterwards. # # If the lifetime is "0", then the dynamic client is never # deleted. The only way to delete the client is to re-start # the server. lifetime = 3600 } # # This is the virtual server referenced above by "dynamic_clients". server dynamic_client_server { # # The only contents of the virtual server is the "authorize" section. authorize { # # Put any modules you want here. SQL, LDAP, "exec", # Perl, etc. The only requirements is that the # attributes MUST go into the control item list. # # The request that is processed through this section # is EMPTY. There are NO attributes. The request is fake, # and is NOT the packet that triggered the lookup of # the dynamic client. # # The ONLY piece of useful information is either # # Packet-Src-IP-Address (IPv4 clients) # Packet-Src-IPv6-Address (IPv6 clients) # # The attributes used to define a dynamic client mirror # the configuration items in the "client" structure. # update control { # # Echo the IP address of the client. FreeRADIUS-Client-IP-Address = "%{Packet-Src-IP-Address}" # require_message_authenticator FreeRADIUS-Client-Require-MA = no # secret FreeRADIUS-Client-Secret = "testing123" # shortname FreeRADIUS-Client-Shortname = "%{Packet-Src-IP-Address}" # nastype FreeRADIUS-Client-NAS-Type = "other" # virtual_server # # This can ONLY be used if the network client # definition (e.g. "client dynamic" above) has # NO virtual_server defined. # # If the network client definition does have a # virtual_server defined, then that is used, # and there is no need to define this attribute. # FreeRADIUS-Client-Virtual-Server = "something" } # # Or, look the client up in SQL. # # This requires the SQL module to be configured, of course. if ("%{sql: SELECT nasname FROM nas WHERE nasname = '%{Packet-Src-IP-Address}'}") { update control { # # Echo the IP. FreeRADIUS-Client-IP-Address = "%{Packet-Src-IP-Address}" # # Do multiple SELECT statements to grab # the various definitions. FreeRADIUS-Client-Shortname = "%{sql: SELECT shortname FROM nas WHERE nasname = '%{Packet-Src-IP-Address}'}" FreeRADIUS-Client-Secret = "%{sql: SELECT secret FROM nas WHERE nasname = '%{Packet-Src-IP-Address}'}" FreeRADIUS-Client-NAS-Type = "%{sql: SELECT type FROM nas WHERE nasname = '%{Packet-Src-IP-Address}'}" FreeRADIUS-Client-Virtual-Server = "%{sql: SELECT server FROM nas WHERE nasname = '%{Packet-Src-IP-Address}'}" } } # # Tell the caller that the client was defined properly. # # If the authorize section does NOT return "ok", then # the new client is ignored. ok } }