rsync errors over ssh - looking for a bit of help

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itefix
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Joined: 01.05.2008 - 21:33
rsync errors over ssh - looking for a bit of help

Hey all,
First off, I'm new to cygwin, rsync, and actually even ssh. I've used clients many times, but server side I'm a bit of a noob. Anyway, here's my problem...

I set up a brand spankin new Windows XP box with only two apps installed: copSSH and rsync. I need to tie down all security as tight as possible. From what I've seen/read, it seems to me the only port I need open on this server is 22 (for SSH). But for the sake of testing I've also opened 873.

I can connect directly to my rsync server (bypassing ssh) via the following command:

rsync *.* user@host.com::module

Works like a charm. However, when I try what I believe to be the correct SSH syntax, which is:

rsync -av --rsh="ssh -l sshuser" *.* user@host.com::module

I get the following error:

user@host.com's password: (entered it incorrectly)
rsync: read error: Connection reset by peer (104)
rsync error: error in rsync protocol data stream (code 12) at io.c(584)

I've also tried just SSH'ing into the server and it works great. I can run rsync as well so I'm not encountering any path issues. Lastly, I've checked the rsync server log file and don't notice any entries when I try and execute the ssh-esque command above.

Am I missing some sort of syntax? Can anyone shed some light?

Thanks,

Mike

itefix
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Last seen: 52 min 1 sec ago
Joined: 01.05.2008 - 21:33
Re: rsync errors over ssh - looking for a bit of help

Sorry, that should say "entered it correctly" after the SSH password promt.

itefix
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Last seen: 52 min 1 sec ago
Joined: 01.05.2008 - 21:33
Re: rsync errors over ssh - looking for a bit of help

Hi,
Your command rsync -av --rsh="ssh -l sshuser" *.* user@host.com::module is correct to initiate a connection to a rsync daemon via ssh by using built-in ssh support in rsync.

However, this method is known to be unstable in cygwin context (well, that was the case a year ago!!). That's the reason why cwRsync server does not support it. Direct ssh-tunnelling is recommended way to establish secure rsync transfers to cwRsync servers.

For windows clients, you can use the Secure Channel Wizard to create a batch file, which also can be an example for other platforms.

Rgrds Tev

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