/etc/pam_radius_auth.conf is in libpam-radius-auth 1.3.17-0ubuntu3.
This file is owned by root:root, with mode 0o600.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 | # pam_radius_auth configuration file. Copy to: /etc/raddb/server
#
# For proper security, this file SHOULD have permissions 0600,
# that is readable by root, and NO ONE else. If anyone other than
# root can read this file, then they can spoof responses from the server!
#
# There are 3 fields per line in this file. There may be multiple
# lines. Blank lines or lines beginning with '#' are treated as
# comments, and are ignored. The fields are:
#
# server[:port] secret [timeout]
#
# the port name or number is optional. The default port name is
# "radius", and is looked up from /etc/services The timeout field is
# optional. The default timeout is 3 seconds.
#
# If multiple RADIUS server lines exist, they are tried in order. The
# first server to return success or failure causes the module to return
# success or failure. Only if a server fails to response is it skipped,
# and the next server in turn is used.
#
# The timeout field controls how many seconds the module waits before
# deciding that the server has failed to respond.
#
# server[:port] shared_secret timeout (s)
127.0.0.1 secret 1
other-server other-secret 3
#
# having localhost in your radius configuration is a Good Thing.
#
# See the INSTALL file for pam.conf hints.
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