fail2ban/config/filter.d/freeswitch.conf

# Fail2Ban configuration file
#
# In freeswitch configuration: <param name="log-auth-failures" value="true"/>
#
# In the fail2ban jail.local file for this filter set ignoreip to the internal
# IP addresses on your LAN.
#

[Definition]

failregex = ^\.\d+ \[WARNING\] sofia_reg\.c:\d+ SIP auth (failure|challenge) \((REGISTER|INVITE)\) on sofia profile \'[^']+\' for \[.*\] from ip <HOST>$
            ^\.\d+ \[WARNING\] sofia_reg\.c:\d+ Can't find user \[\d+@\d+\.\d+\.\d+\.\d+\] from <HOST>$

ignoreregex =

# Author: Rupa SChomaker, soapee01, Daniel Black
# http://wiki.freeswitch.org/wiki/Fail2ban
# Thanks to Jim on mailing list of samples and guidance
#
# No need to match the following. Its a duplicate of the SIP auth regex.
#  ^\.\d+ \[DEBUG\] sofia\.c:\d+ IP <HOST> Rejected by acl "\S+"\. Falling back to Digest auth\.$