[kdo at cosmos.phy.tufts.edu: protocol incompatibility between OpenSSH and SSH secure shell?]

[Richard E. Silverman]

>    openssh does not support rekeying (yet). perhaps openssh-2.5 will,
>    openssh-2.4 will not.
> 
> What is the connection between rekeying and forwarding of
> user-specified ports?

Markus made a mistake.  That message, with "type 20", indicates the
rekeying problem.  Type 80 is an SSH2 "global request" message.  This
suggests to me that you are doing a remote forwarding, rather than a local
one.  OpenSSH does not yet support remote forwarding in protocol 2.

--
 Richard Silverman
 slade at shore.net