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RSync with AWS Transfer Family Failing | No SSH Access

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I'm working with a vendor to pull logs into the AWS Transfer Family SFTP. When running the RSync process, the vendor receives the following error:

Reason: protocol version mismatch -- is your shell clean?; (see the rsync man page for an explanation); rsync error: protocol incompatibility (code 2) at compat.c(178) [sender=3.1.2]

I can manually connect to the instance via SFTP and everything works. When I try to connect via plain SSH, I get the following log messages. Am I missing something that is causing the failure?

Incoming packet #0x7, type 52 / 0x34 (SSH2_MSG_USERAUTH_SUCCESS)
Event Log: Access granted
Event Log: Opening main session channel
Outgoing packet #0x7, type 90 / 0x5a (SSH2_MSG_CHANNEL_OPEN)
Outgoing raw data at 2023-07-18 14:04:00
Incoming raw data at 2023-07-18 14:04:00
Incoming packet #0x8, type 80 / 0x50 (SSH2_MSG_GLOBAL_REQUEST)
Incoming packet #0x9, type 4 / 0x04 (SSH2_MSG_DEBUG)
Incoming packet #0xa, type 4 / 0x04 (SSH2_MSG_DEBUG)
Event Log: Remote debug message: SFTP: key options: agent-forwarding port-forwarding pty user-rc x11-forwarding
Event Log: Remote debug message: SFTP: key options: agent-forwarding port-forwarding pty user-rc x11-forwarding
Incoming raw data at 2023-07-18 14:04:01
Incoming packet #0xb, type 91 / 0x5b (SSH2_MSG_CHANNEL_OPEN_CONFIRMATION)
Event Log: Opened main channel
Outgoing packet #0x8, type 98 / 0x62 (SSH2_MSG_CHANNEL_REQUEST)
Outgoing packet #0x9, type 98 / 0x62 (SSH2_MSG_CHANNEL_REQUEST)
Outgoing raw data at 2023-07-18 14:04:01
Event Log: Remote side unexpectedly closed network connection
1 Answer
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AWS Transfer is a service that accepts SFTP connections (as well as FTPS and FTP but that's not what we're talking about here). It doesn't accept SSH connections, and rsync can't be used with it.

EXPERT
answered 3 years ago

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