you may want to run “iptables -L” to show the current active firewall rules on any recent linux system. Aynhow you may want to ask in a Linux or Ubuntu forum for more details about the firewall.
i can login now, but i can go to web page first 3 minutes after openfire starts.
I don’t quite understand, is your original issue gone or not. Are you saying that you are able to login only for the first 3 minutes after Openfire starts and after that not? Again, what error do you get when you are not able to login?