Rob Munsch wrote:

> Host's logs are filled with "Did not receive identification string
> from x.x.x.x" messages when i am connected to the host *from* x.x.x.x
> at a rate of one every 2-3 minutes. What is the cause of sshd's ire?

Generally, these are caused when a machine connects to the SSH port, but
doesn't attempt login. they're very common if, for example, you're
making periodic connections to port 22 via some kind of monitoring
system. However, any connection which never gets around to
authenticating, from a port scan to a user connecting and walking away
for a few minutes, can cause this message.