[H-GEN] DNS Problem

[Robert Brockway]

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On Sat, 19 Oct 2002, Andrew Pullin wrote:

>     The Windoze side of the dual boot works fine, I can surf
> the net, and do telnets by name and IP address. I have ruled
> out a hardware fault and server/firewall fault because of
> this (I have also had a version of Linux working on this
> machine previously). The Linux side however shows some
> strange behaviour. I can ping anywhere, so routing and

You mean you can ping by name?

> forwarding is working ok, but the only DNS lookups I can do
> by name are to the server/firewall, the Telstra name servers

What command are you using to do lookups in the dns?  nslookup, dig or
host?

> ns0.telstra.net and ns1.telstra.net and to a web site set up
> on the server/firewall. All other lookups result in "Unable
> to locate server, please check the server name and try
> again."

Could you show use the contents of /etc/resolv.conf and also the
"hosts" lines in /etc/nsswitch.conf.

Also do an iptables -L and look for anyting relating to port 53 or dns.
Post this as well.

>     I have checked all of the usual suspects for DNS faults
> (hosts, hosts.allow, hosts.deny, routed.conf etc) but they

Actually hosts.allow & hosts.deny don't have anything to do with name
resolution.  They control the access control lists for TCP wrappers (and
also optionally sshd).

Avoid routed unless your network is complex (unlikely at home :)

> all seem correct. The network interface eth0 is set up
> correctly and shows the correct DNS servers. ifconfig and

Not sure what you mean here.  The dns servers you use are not related to
any given network interface.

> route -n also are correct. The RH installation guide

Are you sure.  Best to post the /sbin/route -n.

> describes exactly what I did to set up the system on install
> and the trouble shooting guide is of no help. The RH website
> is also no help. I have  exhausted all possibilities I know
> of and still can't work this out, so the only thing I can
> put it down to is something new I don't know about since
> RH7.0 that is probably staring me right in the face but I
> just can't see it. If anyone could help out it would be much
> appreciated. TIA.

Did you manually set your dns server anywhere or where they given to you
dynamically (eg, by pppd)?

Cheers,
	-Rob

-- Robert Brockway B.Sc. email: robert at timetraveller.org  ICQ: 104781119
   Linux counter project ID #16440 (http://counter.li.org)
   "The earth is but one country and mankind its citizens" -Baha'u'llah


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