Ljubomir Ljubojevic wrote: > On 11/20/2012 09:25 PM, Les Mikesell wrote: >> On Tue, Nov 20, 2012 at 12:48 PM, Ljubomir Ljubojevic <office at plnet.rs> >> wrote: <snip> >>> 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. >> >> Most server apps will do a reverse-DNS lookup, if only to log the name >> for the connection, some will try an ident query for the user at the >> other end of the socket. A 30+ second delay is a pretty sure sign >> that one or more of the DNS servers in your resolv.conf did not >> respond. Running a local nameserver with a dummy local domain is one >> way to fix it, but just putting all your local systems in the >> /etc/hosts file will work too. <snip> > So the question is: "is there a setting that will reduce that DNS > timeout for all running services, maybe like a ping-watchdog that would > recognize the problem and skip the reverse-DNS lookup if DNS servers are > not reachable?" <snip> What does it say in /etc/nsswitch: is it dns files, or files dns? mark