SSH Connections Slow to Connect

[Jeff]

Rhugga Harper wrote:

>I have a RH AS 3 U4 system. (Dell 2650, 2x3.00 Ghz, 6gb RAM). When I ssh to
>several Solaris 8/9 systems from this box I get about a 5 second delay
>before connecting, however, a solaris system on the same network as this AS3
>box has less than a second connection overhead:
> Note: I am using trusted keys and ssh proto version 2.
>
><solaris9host>:~ #time ssh myserver1 uptime
>12:15pm up 17 day(s), 7:10, 4 users, load average: 1.23, 1.29, 1.47
>
>real 0m0.612s
>user 0m0.150s
>sys 0m0.020s
>
><redhatas3host>: time ssh myserver1 uptime
>12:15pm up 17 day(s), 7:11, 4 users, load average: 1.25, 1.29, 1.46
>
>real 0m6.675s
>user 0m0.020s
>sys 0m0.000s
>
>It is not DNS related, DNS lookups are also subsecond, but to be sure I
>configured the sshd daemon on all systems to not use DNS. I then made sure
>all the host names are in each system's host file.
>
>The ssh_config file on both client systems are identical. The sshd server
>these clients are connecting to is this version: OpenSSH_3.8.1p1, OpenSSL
>0.9.7d 17 Mar 2004
>
>I remember this problem several years ago and can't remember the cause now.
>Anyone have any ideas?
>
>Here is the kernel version of the redhat client that is slow to connect:
>
>Linux <redhatas3host> 2.4.21-27.0.2.1.7.ELhugemem #1 SMP Mon May 16 16:27:47
>PDT 2005 i686 i686 i386 GNU/Linux
>
>Thanks,
>
>CC
>  
>
do `ssh -v solaris-box` and you should be able to see at what point its 
hanging and work from there.

Jeff