Monday, January 07, 2008

First release of my 'shimmer' project

A couple of months ago I blogged about a system for open and closing ports based on a crytographic algorithm that makes it hard for an attacker to guess the right port. It's a sort of port knocking scheme that I called C3PO.

Many commentators via email or on the blog and in other forums requested that I open source the code. I couldn't do that because the code was a nasty hack put together for my machine, but I gone one better.

Today I'm releasing the first version of shimmer. shimmer is completely new, GPL-licensed code, implementing my original idea. Read more about it on the site.



Hit the right port and you're in, hit the wrong one and your blacklisted. Ports change every 60 seconds.

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If you enjoyed this blog post, you might enjoy my travel book for people interested in science and technology: The Geek Atlas. Signed copies of The Geek Atlas are available.

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