FC1 and SSH - logins taking a long time

Rick Stevens rstevens at vitalstream.com
Wed Jun 23 21:53:10 UTC 2004


jeffrey_n_Dyke at Keane.com wrote:
> 
> jeffrey_n_Dyke at Keane.com wrote:
> <snip lots of junk>
> 
>>You could verify this by getting on the SSN target
>>machine (192.168.0.4) and running:
> 
> 
>>           tcpdump port 53
> 
> 
>>and watching the output to see if the DNS stuff is being resolved right
>>or timing out when you try to ssh to that machine.
> 
> 
>>Since you're on a non-routable IP address (192.168/16), a reverse DNS
>>lookup will most likely fail unless you either run an internal DNS>
>>server on your local LAN with a full reverse DNS database or you add the
>>appropriate entries to the SSH target's /etc/hosts file.
> 
> 
> 
> adding to /etc/hosts did the trick.  I don't have internal DNS, but....

ssh will try to do reverse DNS on the incoming IP address to see if it's
really who it says it is.  What you were seeing was a DNS timeout.
> 
> Thanks for the help...and really all the help you supply on this list.  Its
> truely a great service.

"That's what we're here for!" (c)2004, Red Hat Install List :-D
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- Rick Stevens, Senior Systems Engineer     rstevens at vitalstream.com -
- VitalStream, Inc.                       http://www.vitalstream.com -
-                                                                    -
-         Microsoft Windows:  Proof that P.T. Barnum was right       -
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