SSH is working, but other services aren't

From Ubiquity Server Wiki

f SSH is functioning on your server, but other services like the web server, email server, and others are not, you'll want to first look at the daemons running on the server.

If Nothing Works

Start with the firewall applications if nothing works. Try temporarily disabling iptables and any overlying firewall software on the system. Look at running each of the following commands one at a time as they may apply.

service iptables stop
service apf stop
service csf stop

If this fixes the problem, review your fireall configurations and attempt re-enabling these daemons to troubleshoot.

If a Certain Services doesn't Work

Look at the daemons - most can be checked with the status command, if this returns nothing, your best bet is the restart command. Here are some of the more common commands

service httpd restart
service mysqld restart
service smtp restart
service tomcat5 restart

If you don't know the names of daemons running on your server you can check for them using this on a Red-Hat based server.

service --status-all | grep running