Different domains on the same IP

wannab3g33k · 02-23-2007, 08:42 AM

Hi, I didn't get a response to my question in the Linux-Networking forum on this website, that's why I am posting my question here again:

Hello,

I was wondering if anybody could help me with this. I have 3 machines in my apartment running Ubuntu 6.06 LTS, CentOS 4.4 and Windows XP Pro SP2. These 3 machines are behind a single D-Link DI-604 router. This router is behind the router of the ISP who provides the broadband Internet connection (the ISP router is also in my apartment). So essentially, I have one public IP (router) and all the servers are on private IPs. I have 3 domain names and I want to host each of the 3 domains on the 3 different machines.

How do I accomplish the following situation:

www.example1.com > 192.168.0.100 (CentOS)
www.example2.com > 192.168.0.101 (Ubuntu)
www.example3.com > 192.168.0.102 (WinXP Pro)

example1.com, example2.com and example3.com ...all point to the same public IP address.

Note: I want to use port 80 for all domains.

Will this require setting up my own DNS server?

Please advise.

Thank you.
-WBG

trickykid · 02-23-2007, 10:13 AM

The easiest way is to setup one machine as the sort of gateway for all the hosts, preferrably Linux and Apache. Then you'd use mod_rewrite to redirect the traffic from this machine to the others, all using port 80.

So basically this first machine that you forward port 80 to with apache running, you'd setup two other virtual hosts to redirect to the other two domains, an example of the virtual host would look like this:

Code:

<VirtualHost *:80>
        ServerName www.example2.com
        RewriteEngine     On
        RewriteRule       ^(.*)$        http://192.168.0.101$1  [P]
</VirtualHost>

<VirtualHost *:80>
        ServerName www.example3.com
        RewriteEngine     On
        RewriteRule       ^(.*)$        http://192.168.0.102$1  [P]
</VirtualHost>