[Beowulf] High Performance SSH/SCP

Robert G. Brown rgb at phy.duke.edu
Thu Feb 14 09:33:57 PST 2008

On Thu, 14 Feb 2008, Mark Hahn wrote:

>> It would be nice if they would revive the old ssh flag for turning off
>> encryption altogether.  That alone would make let us all finally and
> the PSC folk have a patch for that "HPN SSH".  it works fine.
> it's actually smart enough to do the session setup (auth, etc)
> using the usual set of ciphers, then switches to unencrypted ("ssh 
> -oNoneSwitch=yes -oNoneEnabled=yes").
>> Any idea if the openssh people are going to incorporate the patch
>> permanently?  Any hope of replacing the "Ciphers none" option (even with
> I think they've permanently rejected it.

Grrrr.  Do the PSC folks plan to put their code into e.g. F8 as a
fork/option?  It is so easy to yum install X, so big a pain to hand
build an rpm to install as an alternative and then have to hand maintain
thereafter as e.g. security fixes come out.


> I find that arcfour is a lot faster than the other (non-none) defaults.

Robert G. Brown                            Phone(cell): 1-919-280-8443
Duke University Physics Dept, Box 90305
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