as you may have read recently I was playing with open source routing protocol packages again. from pure CLI familiarity reasons, I kept myself to FRRouting, which is evolution of Quagga, which itself is evolution of Zebra. and Zebra syntax and CLI is based on Cisco IOS. ...
thanks to inspiration from Robert Woźny, i’ve just launched two separate AS112 sites in Poland. that would never be possible without great folks at ATMAN: Sebastian Olejnik and Damian Nowacki …and at EPIX: Krzysztof Czuszek and Paweł Staszewski what is AS112 all about? as112 AS112 is world-wide project that sinkholes requests coming in from misbehaving or misconfigured DNS clients (which may be your home PC but also some enterprise-y workstation). they send queries looking for answers to questions like “what’s the name of 192.168.0.1?” and because that’s not contained as it should be on the local or company level, it goes all up to the root servers. the question itself may be valid, but as you can see, IP address comes from RFC 1918 space, and therefore - shouldn’t be even appearing in public internet space. either we close those queries at the local level, or they really don’t make much sense once you cross private<>public border. actually, malicious actor could be abusing such queries, responding them in a way that will open your network to attack. ...