fail2ban unban ip

To search all the ips that were banned we enter interactive mode:

$ fail2ban-client -i

Then we check a jail status, for example sshd:

> status sshd

the output:

Status for the jail: sshd

|- Filter

|  |- Currently failed: 0

|  |- Total failed: 27

|  `- File list: /var/log/auth.log

`- Actions

   |- Currently banned: 37

   |- Total banned: 38

   `- Banned IP list: <a big list of banned ips>

So, if we want to unban a particular ip address, let's say X

Then, we execute:

> set ssh unbanip (within interactive mode)

Lastly, if you want to execute it directly from command line:

$ fail2ban-client get <JAIL> actionunban <IP-ADDRESS>

That's all.