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32 .Nd RADIUS client configuration file
37 contains the information necessary to configure the RADIUS client
41 The file contains one or more lines of text, each describing a
42 single RADIUS server which will be used by the library.
44 white space is ignored, as are empty lines and lines containing
47 A RADIUS server is described by three to five fields on a line:
49 .Bl -item -offset indent -compact
62 The fields are separated by white space.
65 character at the beginning of a field begins a comment, which extends
66 to the end of the line.
67 A field may be enclosed in double quotes,
68 in which case it may contain white space and/or begin with the
71 Within a quoted string, the double quote character can
74 and the backslash can be represented by
76 No other escape sequences are supported.
78 The first field gives the service type, either
80 for RADIUS authentication or
82 for RADIUS accounting.
83 If a single server provides both services, two
84 lines are required in the file.
85 Earlier versions of this file did
86 not include a service type.
87 For backward compatibility, if the first
92 the library behaves as if
94 were specified, and interprets the fields in the line as if they
95 were fields two through five.
97 The second field specifies
98 the server host, either as a fully qualified domain name or as a
99 dotted-quad IP address.
100 The host may optionally be followed by a
102 and a numeric port number, without intervening white space.
104 port specification is omitted, it defaults to the
110 file for service types
115 If no such entry is present, the standard ports 1812 and 1813 are
118 The third field contains the shared secret, which should be known
119 only to the client and server hosts.
120 It is an arbitrary string of
121 characters, though it must be enclosed in double quotes if it
122 contains white space.
123 The shared secret may be
124 any length, but the RADIUS protocol uses only the first 128
126 N.B., some popular RADIUS servers have bugs which
127 prevent them from working properly with secrets longer than 16
130 The fourth field contains a decimal integer specifying the timeout in
131 seconds for receiving a valid reply from the server.
133 is omitted, it defaults to 3 seconds.
135 The fifth field contains a decimal integer specifying the maximum
136 number of attempts that will be made to authenticate with the server
138 If omitted, it defaults to 3 attempts.
140 this is the total number of attempts and not the number of retries.
142 Up to 10 RADIUS servers may be specified for each service type.
143 The servers are tried in
144 round-robin fashion, until a valid response is received or the
145 maximum number of tries has been reached for all servers.
147 The standard location for this file is
148 .Pa /etc/radius.conf .
149 But an alternate pathname may be specified in the call to
151 Since the file contains sensitive information in the form of the
152 shared secrets, it should not be readable except by root.
157 # A simple entry using all the defaults:
158 acct radius1.domain.com OurLittleSecret
160 # A server still using the obsolete RADIUS port, with increased
161 # timeout and maximum tries:
162 auth auth.domain.com:1645 "I can't see you" 5 4
164 # A server specified by its IP address:
165 auth 192.168.27.81 $X*#..38947ax-+=
171 .%T "Remote Authentication Dial In User Service (RADIUS)"
176 .%T RADIUS Accounting
180 This documentation was written by
184 project by Juniper Networks, Inc.