portsentry is a program that listens on incoming traffic, and takes actions based on the traffic. Useful for blackholing people doing a portscan, or trying to connect to suspect ports like 31337, 12345 and so on. Highly configurable. portsentry is non-free software (boo! hiss!), but since I use it, I'll package it until the author frees it, I find something better, or make something similar myself. -- SSM - Stig Sandbeck Mathisen Trust the Computer, the Computer is your Friend
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