[Gllug] Weird network problem

[Neil Fryer]

Hi All

If anyone can help me out this this would be great as this is a last resort.

I have a Linux box sitting in our DMZ, now from our trusted network, I can
SSH into this machine, but I can't ping it. Once I'm on the box, I can't
ping anything, or do anything from the box network wise, ping, nslookup,
ssh, anything. Then watching the logs on our firewall I can see that this
box is sending DNS requests out to our other DNS server over our VPN? Also
from our other network I can telnet into port 53 of this box, on both it's
normal and NAT'd IP addys, and the same from our trusted network?
I feel that I have tried everything here, can anyone have a guess at what
could be wrong? The interface is up, I don't think it's faulty ootherwise I
wouldn't be able to connect to it via port 53? The default route is correct?
And I'm at a loss?

Thanks

Neil Fryer
Systems Administrator
12Snap UK Ltd
Tel:  +44(0)20 7534 7322
Fax: +44(0)20 7534 7301
Mobile: +44(0)7855 400 309
E-mail: neil.fryer at 12snap.com
http://www.12snap.com



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