rsync with ssh and a different cipher?

pbeckhelm_at_gmail.com
Date: 02/11/05 

Date: 11 Feb 2005 11:02:57 -0800

I'm looking to find out if it's possible to change the cipher used with
ssh when rsync'ing over ssh.

Typically an rsync over ssh will be invoked something like this:

rsync -av -e ssh ./localfile user@remotehost:/remotedir

...however, I'm looking to optimize the transfer, but I don't want to
modify the ssh_config, and would rather use a command line option that
would allow me to change the cipher from the default (3DES, I believe)
to something less complicated, and as such, would result in faster
transfer of files.

I can't find anything online about this, but ssh offers the -C option
to allow you change the cipher, but within rsync this doesn't seem to
work. Anyone have any hints? Oh, and please test your hints before
giving them...I've seem more than my share of speculative help, and
it's not +help+ful at all.

Thanks,

Patrick

Relevant Pages

  • Re: 30GB file transfers using scp
    ... Do you only get the error message when specifying the Blowfish cipher? ... Which versions of SSH are you talking about, ... I would try to find out what's breaking your scp first. ...
    (SSH)
  • Re: Gigabit Ethernet, and Linux -- first observations
    ... one thing that will name a difference: using the patch on the HPN ... page that allows the "none" cipher. ... I am a little leery of patching SSH for any reason. ...
    (comp.security.ssh)
  • Re: 128 bit WEP
    ... How much security do its owners really have? ... A weak cipher is worse than no ... authentication on the ssh connections and don't allow root access on ssh. ...
    (comp.os.linux.networking)
  • Re: Turning off encryption for ssh daemon v1 on a linux machine
    ... Because he wants ssh authentication instead of .rhosts. ... using a cipher. ... So the proper fix would be to separate authentication and encryption ... options or server-side Host * blocks. ...
    (comp.security.ssh)
  • Re: SSH and gigabit NICs
    ... > SSH, which would be the easiest test. ... get "Bad SSH2 cipher spec 'none'." ... ssh only for authentication when transfering backups, and encryption ...
    (freebsd-questions)