How to whitelist an IP in Fail2ban

First, edit the config file:

vi /etc/fail2ban/jail.conf

Then, check the line:

ignoreip =

Now add all the IPs you want. Each IP or IP range must be placed here separated by a space. Ex: 192.168.0.1 192.168.5.0/32 Save, and restart Fail2Ban:

service fail2ban restart