Server unexpectedly closed network connection
Hey,
I'm having some problems and I cannot seem to work out the problem. I've looked through FAQ:s and Guides but I'm now getting any wiser.
We're using WinSCP to log on to a SFTP-server using private keys in Pageant. With both the exe and the com we always get the error "Server unexpectedly closed network connection" the first time we log on. In the exe I can click "Reconnect" and it works and in the com I can just run the open command once again and it works.
I've checked with the SFTP-admins and they have no records in the FTP-log of our logon attempt but they do get this in there Key exchange log:
Our WinSCP log:
Any ideas?
I'm having some problems and I cannot seem to work out the problem. I've looked through FAQ:s and Guides but I'm now getting any wiser.
We're using WinSCP to log on to a SFTP-server using private keys in Pageant. With both the exe and the com we always get the error "Server unexpectedly closed network connection" the first time we log on. In the exe I can click "Reconnect" and it works and in the com I can just run the open command once again and it works.
I've checked with the SFTP-admins and they have no records in the FTP-log of our logon attempt but they do get this in there Key exchange log:
[2009-07-16 10:52:06.639] ERROR [TransportProtocol] Connection Error java.io.IOException: Client did not send complete packet in key exchange! Possible DoS attack
Our WinSCP log:
-------------------------------------------------------------------------- WinSCP Version 4.1.9 (Build 416) (OS 5.1.2600 Service Pack 2) Login time: Tuesday, July 14, 2009 11:15:41 AM -------------------------------------------------------------------------- Session name: swedbank Host name: XXX.XX.XX.XX (Port: 10022) User name: username (Password: No, Key file: No) Tunnel: No Transfer Protocol: SFTP (SCP) Ping type: -, Ping interval: 30 sec; Timeout: 15 sec Proxy: none SSH protocol version: 2; Compression: No Bypass authentication: No Try agent: Yes; Agent forwarding: No; TIS/CryptoCard: No; KI: No; GSSAPI: No Ciphers: aes,blowfish,3des,WARN,arcfour,des; Ssh2DES: No SSH Bugs: -,-,-,-,-,-,-,- SFTP Bugs: -,- Return code variable: Autodetect; Lookup user groups: Yes Shell: default, EOL: 0 Clear aliases: Yes, Unset nat.vars: Yes, Resolve symlinks: Yes LS: ls -la, Ign LS warn: Yes, Scp1 Comp: No Local directory: default, Remote directory: home, Update: No, Cache: Yes Cache directory changes: Yes, Permanent: Yes DST mode: 1 -------------------------------------------------------------------------- Looking up host "XXX.XX.XX.XX" Connecting to XXX.XX.XX.XX port 10022 Selecting events 63 for socket 480 Waiting for the server to continue with the initialisation Looking for incoming data Looking for network events Detected network event Enumerating network events for socket 480 Enumerated 18 network events making 18 cumulative events for socket 480 Handling network write event on socket 480 with error 0 Handling network connect event on socket 480 with error 0 Looking for network events Detected network event Enumerating network events for socket 480 Enumerated 1 network events making 1 cumulative events for socket 480 Handling network read event on socket 480 with error 0 Server version: SSH-2.0-http://3sp.com_Maverick_SSHD We claim version: SSH-2.0-WinSCP_release_4.1.9 SSPI: acquired credentials for: username@user.LOCAL Cannot convert IP address to SPN: DNS is not trusted GSSKEX disabled: Incorrect function. Using SSH protocol version 2 Waiting for the server to continue with the initialisation Looking for incoming data Looking for network events Detected network event Enumerating network events for socket 480 Enumerated 1 network events making 1 cumulative events for socket 480 Handling network read event on socket 480 with error 0 Using Diffie-Hellman with standard group "group14" Doing Diffie-Hellman key exchange with hash SHA-1 Waiting for the server to continue with the initialisation Looking for incoming data Looking for network events Detected network event Enumerating network events for socket 480 Enumerated 32 network events making 32 cumulative events for socket 480 Handling network close event on socket 480 with error 0 Selecting events 0 for socket 480 Server unexpectedly closed network connection (ESshFatal) Server unexpectedly closed network connection.
Any ideas?
