3 ## policy.conf -- FreeRADIUS server configuration file.
5 ## http://www.freeradius.org/
10 # Policies are virtual modules, similar to those defined in the
11 # "instantate" section of radiusd.conf.
13 # Defining a policy here means that it can be referenced in multiple
14 # places as a *name*, rather than as a series of conditions to match,
15 # and actions to take.
17 # Policies are something like subroutines in a normal language, but
18 # they cannot be called recursively. They MUST be defined in order.
19 # If policy A calls policy B, then B MUST be defined before A.
22 # We check for this prefix to determine whether the class value was generated by the server.
23 class_value_prefix = 'ai:'
25 # Overload the default acct_unique module, it's not smart enough
29 # If we have a class attribute in the format 'auth_id:[0-9a-f]{32}' it'll have a local
30 # value (defined by insert_acct_class), this ensures uniquenes and suitability.
32 # We could just use the Class attribute as Acct-Unique-Session-Id, but this may cause
33 # problems with NAS that carry Class values across between multiple linked sessions.
34 # So we rehash class with Acct-Session-ID to provide a truely unique session identifier.
36 # Using a Class/Session-ID combination is more robust than using elements in the
37 # Accounting-Request, which may be subject to change, such as NAS-IP-Address,
38 # Client-IP-Address and NAS-Port-ID/NAS-Port.
40 # This policy should ensure that session data is not affected if NAS IP addresses change,
41 # or the client roams to a different 'port' whilst maintaining its initial authentication
42 # session (Common in a wireless environment).
44 if("%{string:Class}" =~ /${policy.class_value_prefix}([0-9a-f]{32})/i) {
46 Acct-Unique-Session-Id := "%{md5:%{1}%{Acct-Session-ID}}"
50 # Not All devices respect RFC 2865 when dealing with the class attribute,
51 # so be prepared to use the older style of hashing scheme if a class attribute is not included
55 Acct-Unique-Session-Id := "%{md5:%{User-Name}%{Acct-Session-ID}%{NAS-IP-Address}%{NAS-Port-ID:}%{NAS-Port}}"
61 # Insert a (hopefully unique) value into class
65 Class = "${policy.class_value_prefix}%{md5:%t%{request:NAS-Identifier}%{NAS-Port-ID}%{NAS-Port}%{Calling-Station-ID}%{reply:User-Name}}"
70 # Forbid all EAP types.
79 # Forbid all non-EAP types outside of an EAP tunnel.
83 # We MAY be inside of a TTLS tunnel.
84 # PEAP and EAP-FAST require EAP inside of
85 # the tunnel, so this check is OK.
86 # If so, then there MUST be an outer EAP message.
87 if (!"%{outer.request:EAP-Message}") {
94 # Remove Reply-Message from response if were doing EAP
96 # Be RFC 3579 2.6.5 compliant - EAP-Message and Reply-Message should
97 # not be present in the same response.
99 remove_reply_message_if_eap {
100 if(reply:EAP-Message && reply:Reply-Message) {
111 # Split User-Name in NAI format (RFC 4282) into components
113 # This policy writes the Username and Domain portions of the NAI into the
114 # Stripped-User-Name and Stripped-User-Domain attributes.
116 # The regular expression to do this is not strictly compliant with the standard,
117 # but it is not possible to write a compliant regexp without perl style
118 # regular expressions (or at least not a legible one).
121 nai_regexp = "^([^@]*)(@([-[:alnum:]]+\\.[-[:alnum:].]+))?$"
124 if(User-Name =~ /${policy.nai_regexp}/){
126 Stripped-User-Name := "%{1}"
127 Stripped-User-Domain = "%{3}"
129 # If any of the expansions result in a null string, the update
130 # section may return something other than updated...
139 # If called in post-proxy we modify the proxy-reply message
142 split_username_nai.post-proxy {
143 if(proxy-reply:User-Name =~ /${policy.nai_regexp}/){
145 Stripped-User-Name := "%{1}"
146 Stripped-User-Domain = "%{3}"
156 # Forbid all attempts to login via realms.
159 if (User-Name =~ /@|\\/) {
165 # If you want the server to pretend that it is dead,
166 # then use the "do_not_respond" policy.
170 Response-Packet-Type := Do-Not-Respond
177 # Filter the username
179 # Force some sanity on User-Name. This helps to avoid issues
180 # issues where the back-end database is "forgiving" about
181 # what constitutes a user name.
184 # spaces at the start: reject
185 if (User-Name =~ /^ /) {
189 # spaces at the end: reject
190 if (User-Name =~ / $$/) {
195 if (User-Name != "%{tolower:%{User-Name}}") {
202 # The following policies are for the Chargeable-User-Identity
203 # (CUI) configuration.
205 # The policies below can be called as just 'cui' (not cui.authorize etc..)
206 # from the various config sections.
210 # The client indicates it can do CUI by sending a CUI attribute
211 # containing one zero byte
215 Chargeable-User-Identity:='\\000'
220 # Add a CUI attribute based on the User-Name, and a secret key
221 # known only to this server.
224 if (FreeRadius-Proxied-To == 127.0.0.1) {
225 if (outer.request:Chargeable-User-Identity) {
227 Chargeable-User-Identity:="%{md5:%{config:cui_hash_key}%{User-Name}}"
232 if (Chargeable-User-Identity) {
234 Chargeable-User-Identity="%{md5:%{config:cui_hash_key}%{User-Name}}"
242 # If we had stored a CUI for the User, add it to the request.
246 # If the CUI isn't in the packet, see if we can find it
249 if (!Chargeable-User-Identity) {
251 Chargable-User-Identity := "%{cui: SELECT cui FROM cui WHERE clientipaddress = '%{Client-IP-Address}' AND callingstationid = '%{Calling-Station-Id}' AND username = '%{User-Name}'}"
256 # If it exists now, then write out when we last saw
259 if (Chargeable-User-Identity && (Chargeable-User-Identity != "")) {
265 # If there is a CUI attribute in the reply, add it to the DB.
268 if (reply:Chargeable-User-Identity) {
274 # Normalize the MAC Addresses in the Calling/Called-Station-Id
276 mac-addr-regexp = ([0-9a-f]{2})[^0-9a-f]?([0-9a-f]{2})[^0-9a-f]?([0-9a-f]{2})[^0-9a-f]?([0-9a-f]{2})[^0-9a-f]?([0-9a-f]{2})[^0-9a-f]?([0-9a-f]{2})
279 # Add "rewrite_called_station_id" in the "authorize" and "preacct" sections.
281 rewrite_called_station_id {
282 if(Called-Station-Id =~ /^${policy.mac-addr-regexp}(:(.+))?$/i) {
284 Called-Station-Id := "%{tolower:%{1}-%{2}-%{3}-%{4}-%{5}-%{6}}"
290 Called-Station-SSID := "%{7}"
301 # Add "rewrite_calling_station_id" in the "authorize" and "preacct" sections.
303 rewrite_calling_station_id {
304 if(Calling-Station-Id =~ /^${policy.mac-addr-regexp}$/i) {
306 Calling-Station-Id := "%{tolower:%{1}-%{2}-%{3}-%{4}-%{5}-%{6}}"