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Network Security Secure-Shell
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Re: file transfer size limit

Subject: Re: file transfer size limit
Date: Wed, 07 Sep 2005 08:33:39 +0800
Ben Kim wrote:
I've been moving large files (several gb) via scp, and would like some
advices.

1. I'm transferring files via dd on ssh :

/usr/local/bin/tar cvfz - mydirectory | /usr/local/bin/ssh
user@remote_host dd of=/backup/backup.tgz

This used to work but when about 30 gb worth of files were added, the
transfer stopped after finishing about 8 gb.

I haven't logged what's happening, but could there be a timeout issue? (The network is 100mbps but I get at best 2 mb when there's no office
traffic.) For example, would the above transfer stop after 2 hours (grace
time)?

This is likely nat or firewall timeout issue. The solution recommended by official faq is to add "ServerAliveInterval <time>" in your ssh_config.


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