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# Fail2Ban configuration file## Author: Cyril Jaquier##[Definition]# Option: actionstart# Notes.: command executed once at the start of Fail2Ban.# Values: CMD#actionstart = printf %%b "Hi,\nThe jail <name> has been started successfully.\nOutput will be buffered until <lines> lines are available.\nRegards,\nFail2Ban"|mail -s "[Fail2Ban] <name>: started on `uname -n`" <dest># Option: actionstop# Notes.: command executed once at the end of Fail2Ban# Values: CMD#actionstop = if [ -f <tmpfile> ]; thenprintf %%b "Hi,\nThese hosts have been banned by Fail2Ban.\n`cat <tmpfile>`Regards,\nFail2Ban"|mail -s "[Fail2Ban] <name>: Summary from `uname -n`" <dest>rm <tmpfile>fiprintf %%b "Hi,\nThe jail <name> has been stopped.\nRegards,\nFail2Ban"|mail -s "[Fail2Ban] <name>: stopped on `uname -n`" <dest># Option: actioncheck# Notes.: command executed once before each actionban command# Values: CMD#actioncheck =# Option: actionban# Notes.: command executed when banning an IP. Take care that the# command is executed with Fail2Ban user rights.# Tags: See jail.conf(5) man page# Values: CMD#actionban = printf %%b "`date`: <ip> (<failures> failures)\n" >> <tmpfile>LINE=$( wc -l <tmpfile> | awk '{ print $1 }' )if [ $LINE -ge <lines> ]; thenprintf %%b "Hi,\nThese hosts have been banned by Fail2Ban.\n`cat <tmpfile>`\nRegards,\nFail2Ban"|mail -s "[Fail2Ban] <name>: Summary" <dest>rm <tmpfile>fi# Option: actionunban# Notes.: command executed when unbanning an IP. Take care that the# command is executed with Fail2Ban user rights.# Tags: See jail.conf(5) man page# Values: CMD#actionunban =[Init]# Default name of the chain#name = default# Default number of lines that are buffered#lines = 5# Default temporary file#tmpfile = /var/run/fail2ban/tmp-mail.txt# Destination/Addressee of the mail#dest = root