image courtesy of pixabay.com I was recently tasked to investigate Berkeley Packet Filters (BPF) as a possible replacement for our iptables firewall system. I had never heard of BPF before, but that has never stopped a professional sysadmin before and it wasn’t going to now. I dutifully started searching for BPF, what it was, and what we might be able to do with it. I found lots of information, but it was mostly geared towards someone who already knew what BPF was which definitely was not me. It took me a while to get a grip on the subject matter because I could not find a simple primer to bootstrap my knowledge. So, I wrote one and here it is.
A Primer On Berkeley Packet Filters (BPF)
A Primer On Berkeley Packet Filters (BPF)
A Primer On Berkeley Packet Filters (BPF)
image courtesy of pixabay.com I was recently tasked to investigate Berkeley Packet Filters (BPF) as a possible replacement for our iptables firewall system. I had never heard of BPF before, but that has never stopped a professional sysadmin before and it wasn’t going to now. I dutifully started searching for BPF, what it was, and what we might be able to do with it. I found lots of information, but it was mostly geared towards someone who already knew what BPF was which definitely was not me. It took me a while to get a grip on the subject matter because I could not find a simple primer to bootstrap my knowledge. So, I wrote one and here it is.