I have seen ssh timeouts on slow networks because of dns as well. ssh relies
on a reverse lookup and on very slow networks, I've seen the login process
timeout because of bad ptr data.
On Fri, Jun 17, 2011 at 9:23 AM, Joseph Sinclair
<
plug-discussion@stcaz.net>wrote:
> A connection timed out usually occurs due to:
> 1) The ip address has no host (ping the same IP address, then use telnet to
> connect to port 22)
> 2) tcp wrappers is dropping the connection (check /et/hosts.allow and
> /etc/hosts.deny on lapdog3)
> 3) the firewall on lapdog3 is dropping the connection (check the firewall
> configuration on lapdog3 via iptables-save or ufw status)
> 4) SSHD is not on port 22 or dropping connections (check sshd configuration
> on lapdog3)
>
> On 06/17/2011 02:14 AM, Dazed_75 wrote:
> > Ignore the original question. I checked lapdog2's IP in a terminal that
> was
> > logged into a different machine. The ssh was using the right IP but
> getting
> > this result and I cannot figure out why:
> >
> > larry@hammerhead:~$ ssh -v lapdog2
> >> OpenSSH_5.8p1 Debian-1ubuntu3, OpenSSL 0.9.8o 01 Jun 2010
> >> debug1: Reading configuration data /etc/ssh/ssh_config
> >> debug1: Applying options for *
> >> debug1: Connecting to lapdog2 [192.168.2.124] port 22.
> >> debug1: connect to address 192.168.2.124 port 22: Connection timed out
> >> ssh: connect to host lapdog2 port 22: Connection timed out
> >> larry@hammerhead:~$
> >>
> >
> >
> > On Fri, Jun 17, 2011 at 2:00 AM, Dazed_75 <lthielster@gmail.com> wrote:
> >
> >> I tried to ssh from this machine to my laptop (ssh lapdog3) and find
> that
> >> ssh is somehow using an old IP instead of doing name resolution on th e
> name
> >> lapdog2 which now has a new lease on a different IP.
> >>
> >> 1) How do I fix this?
> >> 2) Why does ssh use an old, apparently, stored IP?
> >>
> >> --
> >> Dazed_75 a.k.a. Larry
> >>
> >> The spirit of resistance to government is so valuable on certain
> occasions,
> >> that I wish it always to be kept alive.
> >> - Thomas Jefferson
> >>
> >
> >
> >
> >
> >
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