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Wednesday, July 07, 2010

Fix Slow SSH Login Time

If your login times are really high, it may be that reverse DNS is not working correctly.

(a) Disable DNS in SSH daemon: go to /etc/ssh/sshd_config and include the line UseDNS no, then restart ssh service: /etc/init.d/sshd restart
(b) Or, fix your DNS configuration: in redhat, go to setup -> Network Configuration -> Edit DNS configuration -> and set the primary DNS and the search domain

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