I'm learning as I'm going and my goal is to come up with a way to build secure/beyondcorp/zerotrust-style networks using only existing tools and established tech, unless absolutely necessary.
Tools I'm using include wireguard, iptables, nftables, nginx, ping, traceroute, and nmap.
Which articles, books, authors, or repos must I read and which concepts must I understand?
Trying to find real knowledge about this stuff online is a nightmare!