Access different services using the same port

[ducey]

Hi,

I was wondering if anyone could help me to solve a problem I'm having.

I want to run two services on port 80 using my ADSL account domain name that points at my static IP.

My current setup is as follows:

Internet -> Netgear ADSL Modem/Router -> Server1/server2/PC/PC


Server1 runs Linux (RedHat8), server2 (WinXP), PCs both run WinXP

My Netgear router is only capable of port forwarding, so I can only specify one server to receives requests on port 80.

Is there a way I can filter the incoming requests on port 80 and direct them to the correct server using my current setup?

Or would it be possible to run a check on my server that accepts all port 80 requests and then that forwards onto my other server depending upon the headers?

I've had a look into this and have read different things covering VHosts, Reverse DNS and NAT setups. However, those all confused me a bit.

Does anyone know if what I want is possible or how to go about doing it?

Any help is much appreciated.

Thanks, Nathan

 

[pansophic]

There is no way to use port forwarding to route incoming requests to multiple hosts. So you would need some other way to accomplish this.

The only way that I can think of off-hand, would be to have all initial incoming requests handled by a single machine, and then use a "redirect" based on Java, Javascript or ASP for the connections that you would like redirected.

You would have to run the second server on a different port (for port forwarding), say 81 or 8000 or 8080. You have the redirect go to <ip address>:81.


pansophic

 

[ducey]

Thanks very much pansophic. I've just implemented what you suggest, running the services on different ports and it seems to be working fine
Thanks for the help

 

[pansophic]

What language did you end up using and how are you determining which connections to redirect?


pansophic

 

[ducey]

I cheated and setup my router to direct port 8080 to my web server and port 80 to my other server. So I didn't have to program anything really.
Thanks for your help