Kippo is a medium interaction SSH honeypot designed to log brute force attacks and, most importantly, the entire shell interaction performed by the attacker.

Via One Thing Well

This is helpful for all of those Linux users out there, but for those of us who have a Windows desktop with the same needs, the solution is a bit different. If you use PuTTY (or PuTTY Tray, like me), there’s a field for Seconds between keepalives on the Connection configuration pane. Check out the image at right for the rockin’ detail.