topic Re: Static IP Addresses not working in Archive

Static IP Addresses not working

stuartgoble — Tue, 30 Nov 2010 10:39:38 GMT

I've noticed a number of posts on this so sorry if I'm covering old news. I've got a bundle of five static IPs with my BusinessBroadband account and one of them points to a web and wiki we run internally. We've not been able to fully launch this as yet as we can't reliably get to it from the Internet.

The server is up and and running and I can get to it from my local subnet using both it's static IP address and it's local and web domain name so all appears fine. However, out on the web we cannot get a response from the server whatsoever, using either the domain name or the static IP.

Any ideas anyone...

Re: Static IP Addresses not working

sofarsoslow — Wed, 01 Dec 2010 02:00:23 GMT

This is how I setup my server to use the external ip (on Monday night this week):

Set the server nic interface to dhcp to retrieve the internal ip address. Logged into the router (bt business standard issue 2701HGV-C) went to the firewall section > allow applications ...dmz mode > selected the host name and selected DMZ plus mode.

After a reboot the router assigned the external ip to my server. I run a web, dns and mail server on the one box all accessible from the internet.

In theory you could convert it to static based on the settings the router provides (ipconfig/all) but I havent tried that.

Hope this helps!

Re: Static IP Addresses not working

stuartgoble — Wed, 01 Dec 2010 08:43:40 GMT

Thanks for the advice, the server has the correct static IP address and sees the router as it's gateway correctly as well. I can surf the net from the server so the basic IP connection is fine.

As I said before I can also get from my 172.x subnet through the router to the 81.x subnet so the router looks OK.

What I can't do is get from an external IP address to the server. When I do a Traceroute from a third party site it looks as though the connection gets to Linx and on to BT's 21CN network but then gets stuck until the trace times out.

Now that could be because BTs routers are rejecting the trace but...

So trying a Pingtest from Ping test.net also shows that the connection is getting lost some how, so I think the problem is in the network...