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Hi. I'm a Unix Administrator, mathematics enthusiast, and amateur philosopher. This is where I rant about that which upsets me, laugh about that which amuses me, and jabber about that which holds my interest most: Unix.
Old

Auto-block ssh brute force attacks using built-in tools (OpenBSD and Linux)

Posted 08-30-2012 at 02:28 AM by rocket357 (Musings on technology, philosophy, and life in the corporate world)

I've run a cool trick for a while on my OpenBSD firewall at home, where traffic from any given ip address and port 22 on the firewall is rate limited. If an ip exceeds the given rate, it is put into a ban list (table, actually) that the firewall is configured to drop all traffic from. It works well, and the same functionality can be setup in Linux, too.

To set it up on OpenBSD (this is lifted verbatim from the OpenBSD website pf manual, hence port www instead of port ssh):
...
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Old

Boredom gets the best of me...twice.

Posted 08-22-2012 at 05:58 PM by rocket357 (Musings on technology, philosophy, and life in the corporate world)

Woke up this morning feeling a bit groggy. I'd stayed up entirely too late last night debating different human interactions with my wife and a friend of ours. People are not like computers. They are not predictable...at least, that's my story and I'm sticking to it.

I stumbled through my morning routine, wandered out to the kitchen to grab my lunch, threw the work laptop under my arm and walked out to the car. Bird poo on the driver's side window...again. Not just any bird poo,...
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