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03-19-2004, 01:25 PM #1Web Hosting Master
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RH Linux 9 loosing access to ISP's dns
Hi all,
One of our newly installed co-lo backup machines looses its 'ability to connect' to our datacenters DNS servers after a period of time. I have to keep restarting 'network' every day, otherwise the whole server looses its ability to do nslookups. Ex: can't send mail, takes forever to login, etc.
Any ideas? Could it be ipchains? I locked down nearly everything since the machine is only used to backup data to.
The only place to set the name servers is: /etc/resolv.conf correct??
Thanks.Paradox Web Hosting - codyw@paradox-group.com
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03-19-2004, 02:03 PM #2Web Hosting Master
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Have you tested turning ipchains off ?
So you are using the nameservers located at another datacenter to resolve all dns look ups ?Datums Internet Solutions, LLC
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03-19-2004, 08:59 PM #3Web Hosting Master
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Originally posted by datums
Have you tested turning ipchains off ?
So you are using the nameservers located at another datacenter to resolve all dns look ups ?
Im pretty sure that the problem is ipchains (because portsentry flushes it every 4 hours.)
I think I will just restart the network service every 4 hours too.Paradox Web Hosting - codyw@paradox-group.com
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03-19-2004, 09:55 PM #4Web Hosting Master
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you mean "loses"
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03-20-2004, 07:45 AM #5Web Hosting Master
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Hi,
Try to flush your iptables. You are right, nameservers are placed only in /etc/resolv.conf. Also check with your /etc/hosts.allow entry and DNS configurations.
Regards,
Bright