I’m not sure. But basically you are Chet only the hostname of course. The ddns does all the wot keeping track of the IP changes against the fixed hostname.
Yes Dear I am aware of that, As we have many DDNS for our clients But I was concerned about the fail2ban side as how it will verify the hostname it the ip address.
Anyways I have created a new DDNS Hostname and updated the IP with a update client now added this hostname to the fail2ban ignore list.
@fkardame I faced this issue only 2 days ago and I resolved it by whitelisting my IP and adding ignoreip [my ip address] to jail.conf under the [default] section. I’ve rebooted my server twice since then and the ban hasn’t reoccurred.