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Old 10-08-2003, 08:52 PM   #1
joeswaminathan
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Registered: Oct 2003
Location: California, US
Posts: 5

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Unhappy RH 9.0 DNS resolution over UDP not happening


I have a problem with browsing on a newly installed RH 9.0 linux. Following is the configuration and details.


I have a DSL router (NetGear) installed, and have three PCs hooked to it. 2 of them run MS Windows 98 & 2000 respectively. On the third, I installed RH linux 9.0. I have enabled DHCP, and set to automatically obtain DNS information. After rebooting I see resolv.conf having two
lines with two name-server IP address. Still when I try to browse net using mozilla, it could not resolve domain names.

I tried host <domain name>, it says connection time out.
But if I try host -T <domain name> it resolves fine

$ host yahoo.com
;; connection timed out; no servers could be reached

$host -T yahoo.com
yahoo.com has address 66.218.71.198

The man page says -T option make the communication go over TCP. Does it mean, the name server does not accept UDP connection. If so, how can I configure mozilla to use TCP for name resolution. The only option I see on mozilla to choose between http 1.0 and http 0.1.

Any help is appreciated.

thanks
Joseph
 
Old 10-08-2003, 11:49 PM   #2
joeswaminathan
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Registered: Oct 2003
Location: California, US
Posts: 5

Original Poster
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Thumbs up Re: RH 9.0 DNS resolution over UDP not happening

I had messed up the security settings. Reverting back to default did the trick.

thanks
Joseph

Quote:
Originally posted by joeswaminathan
I have a problem with browsing on a newly installed RH 9.0 linux. Following is the configuration and details.


I have a DSL router (NetGear) installed, and have three PCs hooked to it. 2 of them run MS Windows 98 & 2000 respectively. On the third, I installed RH linux 9.0. I have enabled DHCP, and set to automatically obtain DNS information. After rebooting I see resolv.conf having two
lines with two name-server IP address. Still when I try to browse net using mozilla, it could not resolve domain names.

I tried host <domain name>, it says connection time out.
But if I try host -T <domain name> it resolves fine

$ host yahoo.com
;; connection timed out; no servers could be reached

$host -T yahoo.com
yahoo.com has address 66.218.71.198

The man page says -T option make the communication go over TCP. Does it mean, the name server does not accept UDP connection. If so, how can I configure mozilla to use TCP for name resolution. The only option I see on mozilla to choose between http 1.0 and http 0.1.

Any help is appreciated.

thanks
Joseph
 
Old 11-10-2003, 10:26 AM   #3
philosophil
LQ Newbie
 
Registered: Nov 2003
Distribution: Debian
Posts: 1

Rep: Reputation: 0
How do you change the security settings?

I have the same problem as you, i.e. host slashdot.org doesn't work, whereas host -T slashdot.org works.

I'm having this behavior after doing an update from redat 7.3 to Fedora core 1.

You mention that you fixed the problem by resetting the securty options. How do I do that?

Thanks
 
  


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