Certificate Based Authentication Works or ??

[R4v3N]

I have used the debian repo corkscrew and this github version, both give me the same results. I am attempting to ssh to port 443. Server has sshd running on port 443, and my client is using the 'ProxyCommand /opt/corkscrew/corkscrew my.domain 443 %h %p'

It is a certificated based SSH and my certs are valid and work when not trying to use corkscrew.

The ultimate error that I get is:

kex_exchange_identification: Connection closed by remote host
Connection closed by UNKNOWN port 65535

Any help would be appreciated.

[Bruno Saboia de Albuquerque]

Did you investigate the output with i.e tcpdump?

I had the same error when the proxy server was not able to connect to the final SSH destination due to to incorrect server configuration.

Also, which proxy server are you using?