Topic: dns resolution

[steve]

I am having an odd problem.
I have a Win2k network off a T1, on that same T1 I have two separate networks with 2 SME 5.1.2 servers that I have been using for testing and what not to see if we can replace some M$ servers.

I am trying to get to www.ximian.com to download their latest desktop for linux.
I can get to the site from my Windows 2k workstation (behind checkpoint firewall)
but I cannot get to the same site from a redhat 7.2 machine behind either SME 5.1.2 box.
specifically, I am trying to do a links command to auto download the ximian desktop from go-gnome.com and I get the message

no route to host

but I can get there with the windoze box on my windoze network

can anyone shed some light on this

i disabled transparent proxy and disables squid but the problem persists.

thanks

steve

[Ari]

What security settings did you install as defalt on the Redhat 7.2 box?

[steve]

i dont know?!?!
doh!!
i just downloaded the iso's from rh, burned the cd's and installed as workstation

i did this before on a rh machine, I think it was 7.1 or 7.0, and it worked no problem, but that machine is no longer around

i dont think it is the redhat machine cuz if i putty into the server and ping
www.ximian.com
or
go-gnome.com
i get a reply from my sme's default router saying
destination host unreachable
however, i can get right to it with my windows box on my windows network, of which the checkpoint firewall is using the same default router

how does dns resolution work on SME anyway
it seems to me it is preprogrammed to resolve thru some specific server
i dont think this is sop in the industry (but i could be wrong)
i thought you were always supposed to use the DNS servers that your isp gives you to use

?!?!?!?!?!?!?!?!

steve

[Dan Brown]

steve wrote:

> it seems to me it is preprogrammed to resolve thru some
> specific server
> i dont think this is sop in the industry (but i could be wrong)

    Really, a single question mark would suffice.  In any case, SME is configured to use the root DNS servers, which is a perfectly reasonable practice (though you can set it to use your ISP's DNS server if you wish).

[Chris Meredith]

For a quick fix you can just add your ISP DNS to your host file on the redhat box.  You might comment out the ones that are already there.  See if that lets you resolve the domains correctly.

Also, try doing an nslookup to your sme box and one to another DNS server (your ISP, or something).  See if it resolves the domains to the same address.

If it does, but you still have route problems you might try a traceroute and see if it dies somewhere along the way, or if it never makes it past the SME box.

[Nathan Fowler]

I bet you $20 you didn't update your /etc/resolv.conf on your RH7.2 box to use:
search
nameserver , ie "nameserver 192.168.1.1"