Networking

Useful Linux Networking Resources

A collection of excellent online resources from other authors, in no particular order.

All links below should open in a separate browser tab or window

Network layers explained with examples

https://www.plixer.com/blog/network-layers-explained/

iproute2 utility and IPUP and IPDOWN

http://www.policyrouting.org/iproute2.doc.html#ss9.9

iproute2 utility faq

https://wiki.linuxfoundation.org/networking/iproute2

IPv4 Subnet Calculator

https://www.iplocation.net/subnet-calculator

This is the bomb. I love the detailed output. Choose whatever info you need. Screenshot below.

Broken Link Sniffer

https://www.brokenlinkcheck.com/broken-links.php

Free. Simple. Scans internal and outbound (external facing) hyperlinks.

OpenVPN Community Downloads

https://openvpn.net/community-downloads/

Latest mainstream version, current gen OpenVPN. Still 2.x as of August 2019. Verison 3.x remains experimental. ;)