If you’ve found yourself unfortunate to lock yourself out of SSH and banning yourself from your own server via Fail2Ban, then here’s how to unban yourself:


iptables -L
look at the Chain fail2ban-ssh
notice the ip address to unban and count at which line number this is.
e.g.:
Chain fail2ban-ssh (1 references)
target prot opt source destination
DROP 0 -- 61.236.117.xxx anywhere
DROP 0 -- 61.236.117.yyy anywhere
RETURN 0 -- anywhere anywhere
execute the following command:
iptables -D fail2ban-ssh if you want to unban user 61.236.117.yyy use:
iptables -D fail2ban-ssh 2