Sometimes your provider changes your IP address and if you have IP Access Control turned on, you will not be able to access Webmin anymore. And of course you won’t be able to update your IP address in Webmin if you can’t access it anymore.

So in that case you need to use SSH and edit this config file:

# vi /etc/webmin/miniserv.conf

Look for the line “allow” and edit the IP address(es) as needed:

error_handler_404=404.cgi
error_handler_403=403.cgi
error_handler_401=401.cgi
allow=151.248.55.185 77.109.118.242 80.211.197.221
alwaysresolve=0
libwrap=
trust_real_ip=0