Originally Posted by kisong
The reason I said this is because prior to restarting the server, the port was set to xxxx and the firewall for ISPConfig was set to the same port (again, I'm hiding the actual port number for security reasons).
Before restarting the server, I was able to login with no problems.
The problem started when I restarted the server. Somehow, ISPConfig lost the firewall settings I set and replaced it with a default firewall setting.
Does that make sense?
ISPConfig writes all allowed ports to /etc/Bastille/bastille-firewall.cfg. They don't get lost when you restart your server. But I can imagine the following: you have a second firewall on your server that you did not disable properly, and whenever you restart your server, this firewall tries to start and interferes with ISPConfig's firewall...