ssh 'connection reset by peer' problem since 5.8p1

Colin Watson cjwatson at
Fri Mar 4 01:31:58 EST 2011

On Wed, Feb 23, 2011 at 04:40:00PM +0000, Oren Held wrote:
>I've researched it a bit deeper. Surprisingly it's not a matter of which cipher to
>choose, but of *how long the list of ciphers is*. I'll explain:
>Doesn't work:
>-c 'aes128-ctr' and 94 commas (i.e. -c 'aes128-ctr,,,,,,,,,,,,,,,,,,' etc),
>Does work:
>-c 'aes128-ctr' and 95 commas
>Now the number above varies. On my home computer it was 105 commas vs. 104
>commas. So eventually I bet it has to do with SSH packet size.  For instance in
>my place, according to Wireshark, SSH "Client: Key Exchange Init" packet length
>is 1044+10(padding) in the bad case, 1036+4 in the good case. 

What are the MTU values on the relevant network interfaces on the client
and the server?

Colin Watson                                       [cjwatson at]

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