DragonFly kernel List (threaded) for 2004-08
Re: Slow logins with ssh
Matthew Dillon wrote:
:I upgraded my system recently to DFly 1.1-CURRENT (Aug 24th). It was
:previously 1.1-CURRENT from about July 22nd. Since I have upgraded, I
:have been experiencing slow logins with ssh...When I try to connect, it
:takes a good 60 seconds to make the connection. However, once the
:connection is made, everything goes nice and quick. Is there something
:I can take a look at to resolve this?
Hmm. 60 seconds probably rules out a network protocol issue. It
sounds like a reverse DNS issue. If the target system's sshd is unable
to resolve the IP address of the originator it could take up to 60
seconds for it to give up.
This is easy to test. On the target system try to do a reverse dns
lookup of the other end's IP with 'nslookup'.
e.g. nslookup 18.104.22.168 would return :
22.214.171.124.in-addr.arpa name = apollo.backplane.com.
If it is a reverse dns problem then it's probably your resolver or
something along those lines that has a configuration issue.
Looks like this is the issue. Thanks for the input. I'd been messing
with my DNS server the other day and one little typo...