Learn how to create pipes and rules in OPNsense, in order to prevent a single user/host on your network from using up all of your internet bandwidth, without affecting internal LAN networking (fast internal file transfers etc).
A timestamped video from Jim's Garage showing how to deploy Nebird yourself in a self-hosted manner.
Learn how to set up a VPC peering connection so that two virtual private clouds can communicate with each other over the internal AWS network.
A timestamped introduction video to Open vSwitch from David Mahler.
An example network config for Proxmox, which makes use of vLANs so I don't forget and have something to refer to.
Learn how to configure your nameservers by editing the systemd config files.
Resolve an issue with receiving a dynamic secondary IP in Ubuntu.
Learn about the various Docker networks with a fantastic video from NetworkChuck on Youtube.
Watch a timestamped video from TechnoTim on configuring your network with UniFi.
Learn how to configure network settings, including your DNS servers, in Amazon Linux.
A simple PHP script to generate the iptables rules to import when one needs to set up port forwarding.
Configure a KVM private NAT with a guest acting as a gateway to the outside world. Internal guests will be accessible from the outside world via a reverse proxy and port-forwarding rules.
Limit a computer's bandwidth to the internet, so the rest of your household don't get starved.
Fix an issue whereby KVM guest clones end up receiving the same DHCP IP address even though they have different MAC addresses, because of a "machine ID".
Set a static IP on your ubuntu 18.04 server using netplan.