ssh problem

[navin]

Hi All,

I have hp servers(rx2660) both are running hpux 11.23 and having ssh version as below

OpenSSH_4.5p1+sftpfilecontrol-v1.1-hpn12v14, OpenSSL 0.9.7l 28 Sep 2006
HP-UX Secure Shell-A.04.50.021, HP-UX Secure Shell version

The issue is for the account X ssh login is working fine from host A to B but not B to A
what happens is that the connection for the account is being accepted and then the connection gets closed by the remote host with the below error -pls advice if you have seen this before.
thanks

debug1: Transferred: stdin 0, stdout 0, stderr 81 bytes in 0.0 seconds
debug1: Bytes per second: stdin 0.0, stdout 0.0, stderr 2582.8
debug1: Exit status -1

[Matti_Kurkela]

This is not an error message: it's a notification about the quantities of transferred data and transfer rates. Stdin and stdout are at 0 but stderr has 81 bytes transferred: that would indicate the remote end emitted *some* error message, but for some reason it is not visible. Perhaps the error was overwritten on the screen by the debug output?

If connection from B to A fails, look into the system log (/var/adm/syslog/syslog.log) of node A for more clues. Perhaps there is a clearer error message?

MK

[Kapil Jha]

Is this issue only for the X user aur for all the users.

and are u experiencing this from other server as well.

Have u tried to restart ssh daemon on server A.

BR,
Kapil+

[singh sanjeev]

is sshd-config file configuration is same on the both server ,or any parameter is set differently.??

[Viktor Balogh]

As first step I would take a look at the /etc/opt/sshd_config file on server A, maybe the user was denied there.

How user X authenticates himself on the servers? If it is done with ssh keys, check permissions of the keys, .ssh folder, etc...
Also check the authorized_keys file, one can set there many things like the allowed hosts and users, or the allowed command.

A full ssh -vv output would be also helpful to debug your issue...

[R.O.]

Is your system A experiencing memory/cpu problems? Check your system memory/cpu usage in case you are running out of resources.

Regards,

[Viktor Balogh]

just another idea: does it work for other users? if another users also cannot log in, maybe you should look at /etc/hosts.allow and /etc/hosts.deny files. For more info on that look here:

http://docs.hp.com/en/5991-4837/index.html

[AwadheshPandey]

pls paste ssh -v o/p

[navin]

i'm trying to capture the debug - but i can not make the client to use other ports - any idea

ssh -vvv -p 88888 hostname
OpenSSH_4.5p1+sftpfilecontrol-v1.1-hpn12v14, OpenSSL 0.9.7l 28 Sep 2006
HP-UX Secure Shell-A.04.50.021, HP-UX Secure Shell version
debug1: Reading configuration data /opt/ssh/etc/ssh_config
debug3: RNG is ready, skipping seeding
debug2: ssh_connect: needpriv 0
debug1: Connecting to hostname[address] port 88888.
debug1: connect to address port 88888: Connection refused
ssh: connect to host hostname port 88888: Connection refused

[Viktor Balogh]

on what port the sshd daemon listens? it seems that at port 88888 listens nothing on the ssh server. do a "netstat -an | grep 88888" on the server to see if there is any listening daemon on that port at all.