ubuntu configure dns-nameserver pointer on eth0
First time posting, so I hope I get the problem across ok.
Using VMware workstation on WinXp. I've installed an Ubuntu 7.10 server to act as a firewall hooked up to the vmware bridge. If I ping, for example, news.bbc.co.uk, I get a positive response, so I know this server is working OK. I can also run apt-get update and it responded ok.
I then created a 2nd Ubuntu 7.10 server sitting inside the firewall (it's to represent a DMZ web server) It can ping across the firewall server no problems. If I ping the ip address for news.bb.co.uk, it responds OK. If I ping news.bbc.co.uk, it comes back with unknown host. I suspect that this means that the server inside the firewall cannot access a DNS server to convert the URL to an ip address. In the file /etc/network/interfaces, I've added the line dns-nameserver 18.104.22.168 to the eth0 definition, bounced eth0, but still getting the same result. Also apt-get update gives an error on everyline because it can't locate the security.ubuntu.com site, giving the error message "temporary failure resolving security.ubuntu.com/....". This worked fine on the firewall server.
Can anyone shed some light on what I'm doing wrong here.