[nylug-talk] DNS resolution dying

[Tino Dai]

Thanks.....it was a firewall problem VaibhaV

-Tino

On Sun, 2003-05-11 at 17:45, VaibhaV Sharma wrote:
> On Sun, 2003-05-11 at 16:11, Tino Dai wrote:
> > Hey Everybody in LinuxLand,
> > 
> >    I have run across this annoying problem on one of my RH 8.0 boxes.
> > The DNS resolution is dying. When I do a dig, I get a connection timed
> > out. I have checked that the DNS server is up (it's at my ISP), but when
> > I issue a name resolution call, it just hangs. But, I can reach places
> > with using the ip address so I know that I still have connectivity. And
> > the only thing that seems to resolve this is a reboot. Have any of you
> > guys seen this?
> > 
> > -Tino
> 
> Any entries in the logs?
> 
> Try these - 
> 
> - After DNS resolution dies, try host / dig on your ISP's dns servers,
> then try it against some public dns servers.
> 
> - Try telnetting to port 53 of your ISP's and any other dns servers
> outside your netowrk. If you have an internal dns, try resolving against
> that machine from this machine.
> 
> - Check if you have any firewall rules kicking in. I doubt this would be
> the case, but still check your iptables rules.
> 
> 
> VaibhaV
> http://vsharma.net
> 
> 
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