Fail2Ban unbanning process

1. Log into the target machine with Fail2Ban installed
2. Look at the list of banned IPs and identify the IP you wish to unban:
   

   sudo iptables -L -n

3. Discover the names of the jails:
   

   sudo fail2ban-client status

4. Unban the IP:
   

   sudo fail2ban-client set ssh-iptables unbanip 123.123.123.123