Cannot connect to IPSwitch WS_FTP server using WinSCP in SSH

I am unable to connect to an IPSwitch WS_FTP Server using WinSCP in SSH mode.

If I use WinSCP in standard FTP mode it connects without any problems. If I change it to use SSH then it connects to the server but times out complaining that the server is not responding.

I am able to connect to the SSH server using WS_FTP Professional 2007 and SmartFTP.

I have turned the logging in WS_FTP Server to be verbose but the only message I receive is "Connection established".

Any help would be gratefully received.

Please post a log file from WinSCP.

Martin,

Below is the log from an attempt connecttion with WinSCP:

. 2008-07-14 22:23:14.875 --------------------------------------------------------------------------
. 2008-07-14 22:23:14.875 WinSCP Version 4.1.5 (Build 410) (OS 5.1.2600 Service Pack 3)
. 2008-07-14 22:23:14.875 Login time: 14 July 2008 22:23:14
. 2008-07-14 22:23:14.875 --------------------------------------------------------------------------
. 2008-07-14 22:23:14.875 Session name: test@111.111.111.80
. 2008-07-14 22:23:14.875 Host name: 111.111.111.80 (Port: 22)
. 2008-07-14 22:23:14.875 User name: test (Password: Yes, Key file: No)
. 2008-07-14 22:23:14.875 Tunnel: No
. 2008-07-14 22:23:14.875 Transfer Protocol: SFTP (SCP)
. 2008-07-14 22:23:14.875 Ping type: -, Ping interval: 30 sec; Timeout: 15 sec
. 2008-07-14 22:23:14.875 Proxy: none
. 2008-07-14 22:23:14.875 SSH protocol version: 2; Compression: No
. 2008-07-14 22:23:14.875 Bypass authentication: No
. 2008-07-14 22:23:14.875 Try agent: Yes; Agent forwarding: No; TIS/CryptoCard: No; KI: Yes; GSSAPI: No
. 2008-07-14 22:23:14.875 Ciphers: aes,blowfish,3des,WARN,arcfour,des; Ssh2DES: No
. 2008-07-14 22:23:14.875 SSH Bugs: -,-,-,-,-,-,-,-
. 2008-07-14 22:23:14.875 SFTP Bugs: -,-
. 2008-07-14 22:23:14.875 Return code variable: Autodetect; Lookup user groups: Yes
. 2008-07-14 22:23:14.875 Shell: default, EOL: 0
. 2008-07-14 22:23:14.875 Clear aliases: Yes, Unset nat.vars: Yes, Resolve symlinks: Yes
. 2008-07-14 22:23:14.875 LS: ls -la, Ign LS warn: Yes, Scp1 Comp: No
. 2008-07-14 22:23:14.875 Local directory: default, Remote directory: home, Update: No, Cache: Yes
. 2008-07-14 22:23:14.875 Cache directory changes: Yes, Permanent: Yes
. 2008-07-14 22:23:14.875 DST mode: 1
. 2008-07-14 22:23:14.875 --------------------------------------------------------------------------
. 2008-07-14 22:23:14.922 Looking up host "111.111.111.80"
. 2008-07-14 22:23:14.922 Connecting to 111.111.111.80 port 22
. 2008-07-14 22:23:14.969 Selecting events 63 for socket 556
. 2008-07-14 22:23:14.969 Waiting for the server to continue with the initialisation
. 2008-07-14 22:23:14.969 Looking for incoming data
. 2008-07-14 22:23:14.969 Looking for network events
. 2008-07-14 22:23:14.969 Detected network event
. 2008-07-14 22:23:14.969 Enumerating network events for socket 556
. 2008-07-14 22:23:14.969 Enumerated 18 network events making 18 cumulative events for socket 556
. 2008-07-14 22:23:14.969 Handling network write event on socket 556 with error 0
. 2008-07-14 22:23:14.969 Handling network connect event on socket 556 with error 0
. 2008-07-14 22:23:14.969 Looking for network events
. 2008-07-14 22:23:15.015 Detected network event
. 2008-07-14 22:23:15.015 Enumerating network events for socket 556
. 2008-07-14 22:23:15.015 Enumerated 1 network events making 1 cumulative events for socket 556
. 2008-07-14 22:23:15.015 Handling network read event on socket 556 with error 0
. 2008-07-14 22:23:15.015 Waiting for the server to continue with the initialisation
. 2008-07-14 22:23:15.015 Looking for incoming data
. 2008-07-14 22:23:15.015 Looking for network events
. 2008-07-14 22:23:30.016 Timeout waiting for network events
. 2008-07-14 22:23:30.016 Waiting for data timed out, asking user what to do.
. 2008-07-14 22:23:30.016 Asking user:
. 2008-07-14 22:23:30.016 Host has not answered for 15 seconds.
. 2008-07-14 22:23:30.016
. 2008-07-14 22:23:30.016 Wait for another 15 seconds? ()
. 2008-07-14 22:23:30.516 Pooling for data in case they finally arrives
. 2008-07-14 22:23:30.516 Looking for network events
. 2008-07-14 22:23:30.516 Timeout waiting for network events
. 2008-07-14 22:23:31.047 Pooling for data in case they finally arrives

And below is a sucessfully connection using SmartFTP Client straight after:

[22:29:40] SmartFTP v3.0.1020.2
[22:29:40] Resolving host name "111.111.111.80"
[22:29:40] Connecting to 111.111.111.80 Port: 22
[22:29:40] Starting SSH session. Remote Id: "SSH-2.0"
[22:29:41] Initiating key exchange.
[22:29:42] Computing session key.
[22:29:42] Key Exchange Algorithm: diffie-hellman-group1-sha1
[22:29:42] Key exchange completed.
[22:29:42] Host Key Algorithm: ssh-rsa
[22:29:42] Client to Server Encryption: aes256-cbc
[22:29:42] Server to Client Encryption: aes256-cbc
[22:29:42] Session HMAC: hmac-sha1
[22:29:42] Client to Server Compression: none
[22:29:42] Server to Client Compression: none
[22:29:42] Authentication request. Method: "none"
[22:29:43] Server supported authentications: publickey,password
[22:29:43] Authentication request. Method: "password"
[22:29:43] User authentication successful.
[22:29:43] SSH session established.
[22:29:43] Connected to 111.111.111.80
[22:29:43] SFTP protocol version 4
[22:29:43] Detected Server Software: Unknown
[22:29:43] Resolving path "/localuser/test".
[22:29:44] Path successfully resolved.
[22:29:44] Reading directory "/localuser/test".
[22:29:44] 145 bytes transferred. (1.29 KB/s) (109 ms)
[22:29:44] Directory listing complete.

Thanks for your help.

Martin,

I was able to solve the issue by deleting the SSH listener on the server and recreating it.

Thanks for your time.