Cheat sheets

One-page references to keep open while you work. Every command comes from a lesson, where you can see it run.

• VyOS command cheat sheet

  VyOS configuration and show commands for interfaces, routing, BGP, OSPF, NAT, firewall, DHCP, VRRP, WireGuard and operations, all tested in a lab.

• BGP troubleshooting cheat sheet

  Why a BGP session is stuck in Idle, Active or OpenSent, why routes are missing, and the VyOS and FRR commands that find the cause.

• Common network ports and protocol numbers

  The TCP and UDP ports and IP protocol numbers network engineers meet most: routing, management, DNS, DHCP, VPNs, monitoring and RPKI.