Hello,
I am running AIX 4.3 maint 11 and using openssh [freeware.openssh.rte
3.7.1.0 COMMITTED OpenSSH 3.7p1] as built by Bull.

Within script PROC script A is launched as step 7 of 10 on machine A.
Script A launches via ssh script B on machine B.
Step 8 of script PROC waits on script A to return, but unfortunately does
not always return. When operator sees that A hangs, he starts an ssh
connection from machine A to machine B, executes "date" and logs out. At
the moment of ssh connections establishment script A continues, returns
and script PROC continues with next step.

Anyone has an idea of why openssh hangs and why making a new connection
between the machines script continues?
May I add that I have killed/started opensshd but the same night behaviour
repeated.

Any suggestions or hints?
Thank you very much and have a nice day,
Igor

In article <pan.2004.07.19.08.21.00.245177@merkudelete.org> ,
Igor <igor.news@merkudelete.org> wrote:
>I am running AIX 4.3 maint 11 and using openssh [freeware.openssh.rte
>3.7.1.0 COMMITTED OpenSSH 3.7p1] as built by Bull.
[...]
>Anyone has an idea of why openssh hangs and why making a new connection
>between the machines script continues?
>May I add that I have killed/started opensshd but the same night behaviour
>repeated.

There's a few possible causes listed at:
http://www.openssh.com/faq.html#3.3

I would guess it's either reverse DNS or ssh-rand-helper hanging.

--
Darren Tucker (dtucker at zip.com.au)
GPG key 8FF4FA69 / D9A3 86E9 7EEE AF4B B2D4 37C9 C982 80C7 8FF4 FA69
Good judgement comes with experience. Unfortunately, the experience
usually comes from bad judgement.

how long does it hang for ? 75 seconds ? if so, then reverse name look
up .. do the following comamnd work.

host ipaddress
host hostname
nslookup ipaddress
nslookup hostname

whats in your /etc/resolv.conf, can you ping your DNS servers ? whats
in you /etc/netsvc.conf ? hosts=local,bind4 ? thats what it should be
( unless your using ipv6 that is )

Does it hang indefinatley ? can you telnet in ? ftp in ? etc...

Rgds
Mark Taylor