tcp port problem

[revever]

I am using 8.0 for linux. I have configured and activated the firewall to allow tcp at port 4848 in plesk admin panel.
(Autoriser entrant de tout sur les ports 4848/tcp)

However, I can only telnet localhost 4848.
I cann't telnet this port from a remote host.

Does anyone have any idea about this?

Thanks

 

[revever]

It's Ok.

In fact, this is a problem of hardware firewall. Nothing to do with linux or windows system.