Local Lan, no-ip directed DNS forward, surf within lan

Hi,

We have a website running on a local centos 5.4 surfer, static IP.
The domain.com uses no-ip.com to take care of the DNS, it forwards all to my server.

My router receives the port 80 call, routes it to my server and the world can see domain.com perfectly fine.

However, we cannot see it perfectly fine within the same LAN.

We can FTP to the server locally fine,
We can access the local IP fine, but it looks weird (doesnt use the css I guess)
We can ping all, SSH all etc etc.

How can we browse our website locally within the LAN and see the same as people can outside the LAN?

It is really difficult to make changes at the moment within the office, have to go out to another LAN and than see the effect.

What are we doing wrong?

Hi Lawstudent,
how did you link the css file? Is it in a local directory?
Check the virtual host sections of the HTTP server configuration.

I need more information about the network and HTTP sever configuration to help you further.

Hi,

It is a script I installed, it uses the domain.com as a base, it needs to stay this way as the website is in production.

What kind of information do you need to help?

Hi,
does the server have more than one IP address or more than one name for the given IP?
How do the clients connect to the server: IP address, local name resolution, internet dns?
Which HTTP server are you using?
How is the css file linked to the html file?