Anti-idle in OpenSSH client?

[Damien Miller]

Frank Cusack wrote:
> On Fri, Apr 04, 2003 at 09:39:32AM -0600, mandar at webchat.chatsystems.com wrote:
> 
>>   Most of the windows ssh clients (putty, securecrt) have anti-idle
>>features. They offer either a null packet or protocol no-op or user
>>defined string to be sent over every x seconds.
>>
>>   Is this possible or planned with the OpenSSH client? Our draconian
>>firewall admins have started timing out ssh sessions. Yes I'm aware I
>>could hack up a port forwarding dumb traffic process, but was looking for
>>a more elegant solution like the windows clients have. e.g. a command line
>>option to ssh that lets you anti-idle..
> 
> 
> See ssh_config(5), look for KeepAlive.

Also see sshd_config, grep for ClientAliveInterval (this is protocol-level)