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Public Webserver on Private IP

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by jm 2 views

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Hi everyone,

I have a customer who wants to host a public webserver using a private IP. He has a frame relay connection to a Cisco 2500 router. He only has 1 public IP address - it is assigned to the router. How can he put a webserver behind the router ? I know about NAT, but how would that work when you let the ISP host the DNS? How would NAT know if you were trying to access the webserver or another host on his private LAN? He does not want to host any of his own DNS servers. Any help would be appreciated!
Thanks,
David

5 replies

by it's not easy being green

I have a Firewall that has 1 live IP and does it's own routing to the back end. All you need to do is put the DNS entry in as the Firewall.
The name of the Product is SonicWALL and is inexpensive. So, if he is cheap, this is a great option.

by jacob.wilkins

Why not just set the router up to forward port 80 to the web server? Then just have the DNS entry for the web site setup as a CNAME record pointing at the router's name.

I'm fairly certian that the Cisco can do this kind of port forwarding.

The company I work for sets up lots of Linux routers/firewalls. We do this quite often for both web and mail servers.

by rzan

If you are running the webserver behind a firewall, consider connecting it to the DMZ, which should be visible from the private network.

by Former member

I have 1 public IP but my FTP and WWW server is in local network. How I can make thease services make accessable from Internet?? One thing is IPCHAINS but how to configure thet i dont understand..

Thanx for Help..!

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