Changing the ip form internal to external

Hi!
Before a few minutes i finished an ispconfig installation on fedora core 4.
During the installation i set :
eth0:192.168.0.100 and eth0:0:192.168.0.101

Now i want to install my new server in my rack with a static ip, but i do not know how.

Specifically i want to set the ip which my provider has gave me, for examle 62.101.65.2 to make my server accesible from out of my lan.

Can anyone help me please;

thank you very much.
Kostas

 

Will your server be behind a router, or will it be connected directly to the internet?

 

it will be behind a router

 

Then you have to forward all needed ports (e.g. 21, 22, 25, 53 (TCP and UDP), 80, 81, 110, 143, 443, 993 and 995) from your router to your ISPConfig system.

 

thank you very much!