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Re: [rdiff-backup-users] Disaple SSH encryption in local networks?

From: chuck odonnell
Subject: Re: [rdiff-backup-users] Disaple SSH encryption in local networks?
Date: Wed, 26 Oct 2011 11:41:55 -0400

On Wed, Oct 26, 2011 at 07:59:37AM -0700, Marty_MC wrote:
> Hello to everybody !
> I am using rdiff-backup to backup a Synology server to a Linux
> server.  The backup is running well, however the transfer rate is
> very less.  Because of the less CPU power of the Synology server, I
> have a transfer rate of 15 mbit/s only.
> I assume the reason for that is the 3des encryption of the SSH pipe.
> How can I switch of the SSH encryption or at least switch to a
> faster blowfish encryption in order to speed up the data transfer?
> The -c cipher_spec switch which is outlined in the SSH man page is
> not working as rdiff-backup command.

To adjust ssh I think you are looking for '--remote-schema'

--remote-schema 'ssh -c cipher_spec %s rdiff-backup --server'

If you are using any compression that can chew up some CPU. Also, a
cheap NIC will leave a lot to the CPU. In my experience SSH encryption
is not all that expensive.



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