Comments on: DNS server

By: TomLiotta

TomLiotta — Tue, 11 Sep 2012 02:18:38 +0000

First, if they’re going to be using the same port, they can’t have the same IP. (Well, that’s not totally correct; but if you’re not familiar with multi-homing, it will be much harder to implement the sockets programming that would be required to manage the packets and essentially proxy them to the underlying processes.)

So, you need to use two IPs for the adaptor. With Windows, it can take some poking around to get it done unless you have utilities that can do it for you. See Configure TCP/IP to use DHCP and a Static IP Address at the Same Time for one description of how to add IP addresses for an adaptor.

But re-reading your question makes the actual requirement unclear. Under ‘Software/Hardware used:’, you had ”NO os”. Does that mean you have no OS on the box? What exactly are you trying to do?

Tom

By: ldrrp1

ldrrp1 — Tue, 11 Sep 2012 01:36:14 +0000

Multi-home the adapter???

By: TomLiotta

TomLiotta — Sat, 08 Sep 2012 04:56:31 +0000

If they must be on the same port numbers, then you need to assign a different IP address for each one. Multi-home the adapter. — Tom

By: ldrrp1

ldrrp1 — Sat, 08 Sep 2012 04:46:37 +0000

One router, one WAN IP. multiple servers behind a firewall on same portsfor example two webservers

By: Gabe9527

Gabe9527 — Tue, 04 Sep 2012 14:24:49 +0000

Do you mean – external access to a single IP but behind the firewall there are three servers?This is a Network Address Translation (NAT) address

By: TomLiotta

TomLiotta — Tue, 04 Sep 2012 05:20:42 +0000

Just assign multiple IP addresses to your system. That generally isn’t a problem. Just about every network adapter will allow multiple addresses: multi-homing. — Tom