BUG: ssh.exe ProtocolKeepAlives option broken

Corinna Vinschen corinna-cygwin@cygwin.com
Wed Jul 21 08:26:00 GMT 2004

On Jul 28 07:51, Float wrote:
> |>Summary: Cygwin ssh.exe doesn't accept the 'ProtocolKeepAlives' option
> |>
> |>Example:
> |>C:\sshclient>ssh -o ProtocolKeepAlives=180 example.com
> |>command-line: line 0: Bad configuration option: ProtocolKeepAlives
> |
> |AFAICT, ProtocolKeepAlives is not mentioned in the manpage for ssh.
> |So, this isn't a bug.
> Indeed, it seems that it is not mentioned in the Cygwin ssh_config manpage.
> However, that option should be supported according to the following 
> Corinna Vinschen mail:
> http://sources.redhat.com/ml/cygwin/2002-01/msg00323.html
> Btw, the ProtocolKeepAlives is a must for using ssh for port forwarding
> behind a firewall that drops inactive connections.

ProtocolKeepAlives has been dropped a couple of OpenSSH versions before.
See `man sshd_config' for ClientAliveInterval and ClientAliveCountMax,
`man ssh_config' for ServerAliveInterval and ServerAliveCountMax, or
both for TCPKeepAlive.


Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Co-Project Leader          mailto:cygwin@cygwin.com
Red Hat, Inc.

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