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08.13.2003 at 09:26PM PDT, ID: 20709154
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sshd -- reverse hostname lookup problem

Asked by raytung in Linux Network Security

Tags: reverse, lookup, ssh, sshd

Hi,

I'm currently using RedHat 7.2 & 7.3. I use ssh to connect to the linux servers. Recently I have disabled the reverse name lookup in the DNS server and now whenever I try ssh to the linux servers, it paused for a while (~30 secs) before prompting for password. I've tried changing the config in /etc/sshd/sshd_config like these:

In RH 7.2:-

   ReverseMappingCheck   no

In RH 7.3:-

   VerifyReverseMapping   no


I've restarted the sshd services after changing the config files, but no improvement. And the log file /var/log/secure gives the following:-

Aug 14 09:11:21 machine1 sshd[22240]: Could not reverse map address 10.31.44.152


Does anyone know what the problem is? Did I change the wrong config? Please help!!!

Thank you!!
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Keywords: sshd -- reverse hostname lookup pr…
Title
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[+][-]08.14.2003 at 02:59AM PDT, ID: 9145210

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[+][-]08.14.2003 at 06:39AM PDT, ID: 9146457

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About this solution

Zone: Linux Network Security
Tags: reverse, lookup, ssh, sshd
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Solution Provided By: jlevie
Participating Experts: 3
Solution Grade: A
 
 
[+][-]08.14.2003 at 09:34AM PDT, ID: 9148032

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[+][-]08.14.2003 at 08:36PM PDT, ID: 9152271

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[+][-]08.15.2003 at 11:02PM PDT, ID: 9164645

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[+][-]08.16.2003 at 07:35AM PDT, ID: 9165583

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[+][-]06.25.2004 at 11:11AM PDT, ID: 11401103

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