[CentOS] SSH slow
Timo Schoeler
timo.schoeler at riscworks.netTue Jan 19 10:14:42 UTC 2010
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On 01/19/2010 12:26 AM, Les Mikesell wrote: > ML wrote: >> Hi All, >> >> All of my systems are running 5.4 x64. The are all AMD x64 >> processors with at least 2gb of RAM in each. >> >> I am running SSH on a non standard port. >> >> When I SSH into ANY of my systems, I get prompted for my password >> right away, but after entering, it takes 30+ seconds to get logged >> in and get a prompt so I can work. >> >> I dont quite know what to look for here >> >> Does anyone have thoughts? > > That sounds like a failing reverse DNS lookup or IDENT query dropped > by a firewall so you wait for the timeout. Try setting 'UseDNS no' in /etc/ssh/sshd_config. HTH, Timo
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