ssh connection refused

[C.W. Yeung]

I have installed openssh 3.5p1. After starting the sshd, I tried to connect to the server from client. However, when I finished entering password, the connection was closed.
This is the error from syslog:
1. Accepted password for test from xxx.xxx.xxx.xxx port 50916 ssh2
2. fatal: mm_send_fd: sendmsg(3): Bad file number
3. fatal: mm_receive_fd: recvmsg: expected received 1 got 0

Any help would be appreciated. Thanks in advance.

[Christian Gebhardt · Accepted solution]

I think it's a problem with the new feature "privilege separation"

Try to write input
UsePrivilegeSeparation no
in your /etc/sshd_config file and restart the daemon

Chris

[Christian Gebhardt]

Infos to this new feature:

Changes since OpenSSH 3.2.3:
============================

Security Changes:
=================

- improved support for privilege separation:

privilege separation is now enabled by default

See UsePrivilegeSeparation in sshd_config(5)
and http://www.citi.umich.edu/u/provos/ssh/privsep.html for more
information.

Chris

[C.W. Yeung]

Thanks chris. It is the
privilege separation that caused the problem.