[SOLVED] ping / nslookup / host not working

j66788 · 10-07-2009, 02:42 PM

Hi,

On a vBulletin forum that I use, the email notifications have been broken for some weeks. The tech guy has gone awol, and so I've volunteered to have a look. I'm not experienced in server administration, but I'm trusted by the site owners as I've been an admin to the forum before.

Domain: britishchineseonline.com
IP: 66.111.36.90

ping google.com returns unknown host.
nslookup google.com returns can't find google.com: No answer.
host google.com has no output.

I'm thinking the problem must be related to this. Please help!

> more /etc/resolv.conf

domain britishchineseonline.com
nameserver 212.67.202.2
nameserver 92.51.159.40

Thanks in advance.

j.

wfh · 10-07-2009, 02:47 PM

What do you see when you type:

netstat -nr

See if your routing looks normal. You should see your gateway IP with a "UG" flag.

repo · 10-07-2009, 02:50 PM

Welcome to LQ

The dns server doesn't respond

Quote:

repo@cannabis:~$ nslookup
> server 212.67.202.2
Default server: 212.67.202.2
Address: 212.67.202.2#53
> www.google.com
Server: 212.67.202.2
Address: 212.67.202.2#53
Non-authoritative answer:
*** Can't find www.google.com: No answer
> server 92.51.159.40
Default server: 92.51.159.40
Address: 92.51.159.40#53
> www.google.com
Server: 92.51.159.40
Address: 92.51.159.40#53
Non-authoritative answer:
*** Can't find www.google.com: No answer
> exit
repo@cannabis:~$

I would suggest to use open dns
208.67.222.222 and 208.67.220.220
see
https://www.opendns.com/start/

j66788 · 10-07-2009, 03:25 PM

Quote:

Originally Posted by wfh

What do you see when you type:

netstat -nr

See if your routing looks normal. You should see your gateway IP with a "UG" flag.

Code:

> netstat -nr
Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
66.111.36.0     0.0.0.0         255.255.255.0   U         0 0          0 eth0
0.0.0.0         66.111.36.1     0.0.0.0         UG        0 0          0 eth0

I think there's another site running on the box

Code:

> more /etc/hosts
127.0.0.1       localhost.localdomain   localhost       66-111-36-90
66.111.36.91    chinatown-online.co.uk chinatown-online.co.uk
66.111.36.90    britishchineseonline.co.uk britishchineseonline.co.uk
66.111.36.90    britishchineseonline.com britishchineseonline.com

# The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts

j66788 · 10-07-2009, 05:01 PM

Quote:

Originally Posted by repo

Welcome to LQ

The dns server doesn't respond

I would suggest to use open dns
208.67.222.222 and 208.67.220.220
see
https://www.opendns.com/start/

That fixes the problem. Thank you very much!

repo · 10-07-2009, 05:52 PM

Quote:

Originally Posted by j66788

That fixes the problem. Thank you very much!

You can mark the thread solved if you want.