enable none cipher

Chris Rapier rapier at psc.edu
Tue Nov 27 05:28:21 EST 2007

mihai wrote:
> Hello,
>     Does anybody know how cam I enable the usage of the 'none' cipher in 
> OpenSSH 4.7

You should not enable the none cipher in the base OpenSSH code as it is 
a serious security problem. The data you are sending might not be worth 
encrypting but your authentication should *always* be encrypted. If you 
do want to use the none cipher in a safer way you should get the HPN-SSH 
patch from http://www.psc.edu/networking/projects/hpn-ssh. This patch, 
in addition to some other things, re-implements the none cipher but 
maintains secure authentication. There is a caveat in that you cannot 
use the none cipher in interactive sessions - its only for bulk data 

You'll need to read the HPN12-README file to learn how to use it.


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