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I'm taking a course on server administration at school and I have managed to set up virtual hosting in apache and a dns server on a virtual machine. However, I have now set up an old pc to run CentOS and I'm trying the same on that box.

The problem I ran into now is that I can't resolve hostnames from the linux box. I have set up the nameserver in /etc/resolv.conf to the IP of the CentOS machine, but when I try for example

ping I get ping: unknown host

However, when I do ping (which is the Google IP, figured that out by pinging on my mac) I get:

PING ( 56(84) bytes of data.
64 bytes from icmp_seq=1 ttl=52 time=15.5 ms

Slightly confused why this is happening. Could it be because of my router sitting in between the linux machine and the cable modem? It's a D-Link somethingsomething.

Thanks in advance

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You need to make sure you can reach the DNS server. Also, the DNS server should be configured properly and should be able to query other DNS servers and/or access public DNS servers. You need to provide us with more details about your setup. –  Khaled Nov 12 '11 at 12:55
Can you paste your named.conf file? It sounds like you are trying to setup a caching server. –  Rilindo Nov 12 '11 at 17:16
So how does your DNS-server know how to ask about the .com Domain? –  Nils Nov 12 '11 at 21:35

1 Answer 1

Well, probably the server that you set in resolv.conf is not accessible or it does not provide you an answer for

dig @IP-of-your-dns-server


ping IP-of-your-dns-server

Unlikely your router have anything to do with it.

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The DNS server is running on the box itself. This is only for testing purposes, because I want to then set my mac's dns server to the test box and be able to use the domainnames I set up there (to fake them). Makes sense? Ping <ip> works, but the dig command doesn't work. –  cabaret Nov 12 '11 at 16:28

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