fail2ban-unban_successful_ftp_clients.sh

#!/usr/bin/env bash

awk '/proftp.*successful/ { print $7 }' /var/log/secure{,.?} \
    | cut -f1 -d\[ \
    | tr -d '(' \
    | sort \
    | uniq \
    | while read ip ; do
        echo flushing $ip from banlist...
        for chain in fail2ban-{,REPEAT-}SFTP ; do
            /sbin/iptables -D $chain -s $ip -j DROP 2>/dev/null
        done
        sed -i "/${ip}/d" /etc/fail2ban/ip.blocklist.SFTP
      done