problem with port forwarding

From: Georg D. (georg_at_nospam)
Date: 12/02/03 

Date: Tue, 02 Dec 2003 16:10:15 GMT

hi there,

I have following problem with ssh port forwarding:

- ssh and sftp sessions are functional

- it is "SSH Secure Shell 3.2.9" to "OpenSSH_3.4p1" on SuSe 8.1

- port forwarding can be defined and the client listens to
the specified port

- when a connection is requested, a channel is opened and the daemon
tries to establish connection on the server side.

- the server sees "connection refused" (?), and closes the channel

- if I try connection to the same local port on the server withing
the same ssh session with telnet - it works

- it is unclear to me why sshd would not be able to establish the
connection.

- sshd in debug-mode gives following output:

-----8<-----8<-----8<-----8<-----8<-----

21822: debug1: server_request_direct_tcpip: originator 127.0.0.1
 port 1403, target localhost port 3306
21822: debug1: fd 11 setting TCP_NODELAY
21822: debug2: fd 11 is O_NONBLOCK
21822: debug2: fd 11 is O_NONBLOCK
21822: debug1: channel 2: new [direct-tcpip]
21822: debug1: server_input_channel_open: confirm direct-tcpip
21822: debug1: channel 2: not connected: Connection refused
21822: debug1: channel 2: zombie
21822: debug1: channel 2: garbage collecting
21822: debug1: channel_free: channel 2: direct-tcpip, nchannels 3

-----8<-----8<-----8<-----8<-----8<-----

telnet (on the client side, using port forwarding):

~> telnet localhost 3306
Trying 127.0.0.1...
Connected to silver.
Escape character is '^]'.
Connection closed by foreign host.

-----8<-----8<-----8<-----8<-----8<-----

so, "connection refused" it is :-/
as described above, telnet _on the server_ gets the connection
normally.

I've checked sshd_config - port forwarding is allowed.

What could be the reasons?
What shall I check next?

thanks in advance,
Zrin

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