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# Fail2Ban configuration file## Author: Michael Gebetsroither## This is for blocking whole hosts through blackhole routes.## PRO:# - Works on all kernel versions and as no compatibility problems (back to debian lenny and WAY further).# - It's FAST for very large numbers of blocked ips.# - It's FAST because it Blocks traffic before it enters common iptables chains used for filtering.# - It's per host, ideal as action against ssh password bruteforcing to block further attack attempts.# - No additional software required beside iproute/iproute2## CON:# - Blocking is per IP and NOT per service, but ideal as action against ssh password bruteforcing hosts[Definition]actionban = ip route add <blocktype> <ip>actionunban = ip route del <blocktype> <ip>[Init]# Option: blocktype# Note: Type can be blackhole, unreachable and prohibit. Unreachable and prohibit correspond to the ICMP reject messages.# Values: STRINGblocktype = unreachable