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25 .\" $FreeBSD: src/lib/libradius/radius.conf.5,v 1.4.2.3 2001/08/17 15:43:06 ru Exp $
26 .\" $DragonFly: src/lib/libradius/radius.conf.5,v 1.2 2003/06/17 04:26:51 dillon Exp $
33 .Nd RADIUS client configuration file
38 contains the information necessary to configure the RADIUS client
39 library. It is parsed by
41 The file contains one or more lines of text, each describing a
42 single RADIUS server which will be used by the library. Leading
43 white space is ignored, as are empty lines and lines containing
46 A RADIUS server is described by three to five fields on a line:
48 .Bl -item -offset indent -compact
61 The fields are separated by white space. The
63 character at the beginning of a field begins a comment, which extends
64 to the end of the line. A field may be enclosed in double quotes,
65 in which case it may contain white space and/or begin with the
67 character. Within a quoted string, the double quote character can
70 and the backslash can be represented by
72 No other escape sequences are supported.
75 The first field gives the service type, either
77 for RADIUS authentication or
79 for RADIUS accounting. If a single server provides both services, two
80 lines are required in the file. Earlier versions of this file did
81 not include a service type. For backward compatibility, if the first
86 the library behaves as if
88 were specified, and interprets the fields in the line as if they
89 were fields two through five.
91 The second field specifies
92 the server host, either as a fully qualified domain name or as a
93 dotted-quad IP address. The host may optionally be followed by a
95 and a numeric port number, without intervening white space. If the
96 port specification is omitted, it defaults to the
102 file for service types
107 If no such entry is present, the standard ports 1812 and 1813 are
110 The third field contains the shared secret, which should be known
111 only to the client and server hosts. It is an arbitrary string of
112 characters, though it must be enclosed in double quotes if it
113 contains white space. The shared secret may be
114 any length, but the RADIUS protocol uses only the first 128
115 characters. N.B., some popular RADIUS servers have bugs which
116 prevent them from working properly with secrets longer than 16
119 The fourth field contains a decimal integer specifying the timeout in
120 seconds for receiving a valid reply from the server. If this field
121 is omitted, it defaults to 3 seconds.
123 The fifth field contains a decimal integer specifying the maximum
124 number of attempts that will be made to authenticate with the server
125 before giving up. If omitted, it defaults to 3 attempts. Note,
126 this is the total number of attempts and not the number of retries.
128 Up to 10 RADIUS servers may be specified for each service type.
129 The servers are tried in
130 round-robin fashion, until a valid response is received or the
131 maximum number of tries has been reached for all servers.
133 The standard location for this file is
134 .Pa /etc/radius.conf .
135 But an alternate pathname may be specified in the call to
137 Since the file contains sensitive information in the form of the
138 shared secrets, it should not be readable except by root.
143 # A simple entry using all the defaults:
144 acct radius1.domain.com OurLittleSecret
146 # A server still using the obsolete RADIUS port, with increased
147 # timeout and maximum tries:
148 auth auth.domain.com:1645 "I can't see you" 5 4
150 # A server specified by its IP address:
151 auth 192.168.27.81 $X*#..38947ax-+=
157 .%T "Remote Authentication Dial In User Service (RADIUS)"
162 .%T RADIUS Accounting
166 This documentation was written by
170 project by Juniper Networks, Inc.