A reluctant adopter of Ubuntu, I’ve recently upgraded one of my servers to Ubuntu 18.04 LTS. There are some new features in the mix (both security and general functionality). Finding a succinct and complete list of new features is elusive, so here is one in case you are looking for the same:
Bind is a good DNS server, however it has a slightly chequered history insofar as vulnerabilities are concerned. Nevertheless it’s a good solution for internal networks, and offers some flexible configuration options. In this post I’m going to add some security filtering functionality using Perl, Bash and some standard Linux tools.