On 11/21/2012 09:44 AM, Peter Eckel wrote: > Hi Ljubomir, > >> But when I tried to login to my server, it was not instantenous, and I >> think it was 15+, maybe even 30+ seconds (I forgot to time it) from >> start of ssh command to password prompt. It is in-house connection, so >> there is nothing to traceroute. > > > are you using an external DNS server that is reachable via the internet only? > > If so, edit /etc/ssh/sshd_config and change this > > #UseDNS yes > > to > > UseDNS no > > Then restart sshd and see whether it still happens. sshd tries to look up its counterpart's host name using DNS in the default setting, and if DNS is not reachable it waits for the request to time out. > > Best regards, > > Peter. > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos "UseDns no" doesn't solve the problem because GSS Api needs reverse lookup. If (do not need GSS Authentication) then put "GSSAPIAuthentication no" in the host /etc/ssh/sshd_config else put your server ip and server name in the client /etc/hosts "xxx.xxx.xxxx.xxx yourserver.name" :) H.can