Authentication protocol

[Markus Friedl]

no, it's like this:

server -> client:	SSH2_MSG_SERVICE_ACCEPT
client -> server:	SSH2_MSG_USERAUTH_REQUEST(method = none)
server -> client:	SSH2_MSG_USERAUTH_FAILURE(list of methods)
client -> server:	SSH2_MSG_USERAUTH_REQUEST(some method)

-m