[wellylug] Disabling SSH remote host identification temporarily

[David Antliff]

Good morning everyone,

I have a host (A) that dual boots two environments (Gentoo/Win+Cygwin) and 
I am setting up SSH for both environments. From another host (B, on the 
same LAN) I am able to SSH to A (when running Linux) with public-key 
authentication.

I would like to be able to SSH into host A when it is booted into 
Windows/Cygwin however I get the expected error message:

...
@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
...
Add correct host key in /home/david/.ssh/known_hosts to get rid of this 
message.
...
etc


Normally I simply delete the host A key from B's known_hosts file, but 
with Openssh v4 the hosts are now hashed so I have no (obvious) way of 
knowing which entry corresponds to host A.

So I looked at some of the options you can pass to ssh, either by command 
line or by .ssh/config

I'm not sure which ones are actually relevant but these two looked 
promising:

RSAAuthentication no
StrictHostKeyChecking no

$ ssh A -o "RSAAuthentication no" -o "StrictHostKeyChecking no"

result: same error. Perhaps I am using the wrong options.


I moved known_hosts out of the way and I was, of course, able to connect 
without issue. However I'd like to get this to work in the general case.


Does anyone know the correct incantation to reach the other side?



Thanks,

-- 
David.