Filtering Broadband Internet With A Raspberry Pi

With it’s single network port, low memory and low CPU speed, a Pi may not seem capable of filtering traffic at a very high bandwidth. This article describes how to make a small filter system that can block IP addresses on the inside or outside of your network while not having any noticeable effect on the network speed. And no, it’s not just blocking the DNS, it’s really blocking the traffic.

Working out what not to work out.


Call me strange, but one day I looked at our two block calendar and thought what numbers must be on the two blocks for this calendar to work. No matter how I tried, I couldn’t come up with two blocks of 6 numbers that could be used to show all numbers from 01 to 31. So I did what any computer programmer would. I simulated it in software. Read on for the surprise outcome.

Continue reading “Working out what not to work out.”