Topic "SFTP over VSAT"

Author Message
paulv

Guest


Can anybody shed light why we can't get SFTP version 3 negotiated over a VSAT connection?

This is the error message we get about maximum supported packet size even though we have checked that we are able to support 1500 bytes MTU over the VSAT network even with the DF bit set?

. 2015-06-30 07:48:40.000 Using SFTP protocol.
. 2015-06-30 07:48:40.002 Doing startup conversation with host.
> 2015-06-30 07:48:40.004 Type: SSH_FXP_INIT, Size: 5, Number: -1
> 2015-06-30 07:48:40.005 01,00,00,00,05,
. 2015-06-30 07:48:40.005 Sent 9 bytes
. 2015-06-30 07:48:40.005 There are 0 bytes remaining in the send buffer
. 2015-06-30 07:48:40.005 Looking for network events
. 2015-06-30 07:48:40.005 Timeout waiting for network events
. 2015-06-30 07:48:40.005 Read 4 bytes (55 pending)
. 2015-06-30 07:48:40.005 Attempt to close connection due to fatal exception:
* 2015-06-30 07:48:40.005 Received too large (218766171 B) SFTP packet. Max supported packet size is 1024000 B.
* 2015-06-30 07:48:40.005
* 2015-06-30 07:48:40.005 The error is typically caused by message printed from startup script (like .profile). The message may start with ""\r\n["".
. 2015-06-30 07:48:40.005 Closing connection.
. 2015-06-30 07:48:40.005 Sending special code: 12
. 2015-06-30 07:48:40.005 Sent EOF message
. 2015-06-30 07:48:40.005 Selecting events 0 for socket 712
* 2015-06-30 07:48:40.011 (ESshFatal) Received too large (218766171 B) SFTP packet. Max supported packet size is 1024000 B.
* 2015-06-30 07:48:40.011
* 2015-06-30 07:48:40.011 The error is typically caused by message printed from startup script (like .profile). The message may start with ""\r\n["".
* 2015-06-30 07:48:40.011 Cannot initialize SFTP protocol. Is the host running a SFTP server?
martin
[View user's profile]
Site Admin
Joined: 2002-12-10
Posts: 25034
Location: Prague, Czechia
This has nothing to do with a packet size, as the error message actually tries to explain.
For details, see https://winscp.net/eng/docs/message_large_packet
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