install-server/mailu-f2b/fail2ban-docker-action.conf

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[Definition]
actionstart = iptables -N f2b-bad-auth
iptables -A f2b-bad-auth -j RETURN
iptables -I DOCKER-USER -p tcp -m multiport --dports 1:1024 -j f2b-bad-auth
actionstop = iptables -D DOCKER-USER -p tcp -m multiport --dports 1:1024 -j f2b-bad-auth
iptables -F f2b-bad-auth
iptables -X f2b-bad-auth
actioncheck = iptables -n -L DOCKER-USER | grep -q 'f2b-bad-auth[ \t]'
actionban = iptables -I f2b-bad-auth 1 -s <ip> -j DROP
actionunban = iptables -D f2b-bad-auth -s <ip> -j DROP