Lucas, Networking for System Administrators (2nd ed.) ch. 2 — interfaces, autonegotiation, MTU and DF ping, ARP and NDP, VLAN terms and datalink error counters.
Resource Cheatsheet
#vlans
4 entries across collections.
Pre Security module 5, Extending Your Network — port forwarding, stateful vs stateless firewalls, VPNs and VPN protocols, routers, layer 2 vs layer 3 switches, and VLANs.
Resource Cheatsheet
Full class notes for Lucas, Networking for System Administrators (2nd ed.) ch. 2: interfaces, autonegotiation, MTU, ARP and Neighbor Discovery, VLANs and datalink errors.
Lesson Note
Full class notes for TryHackMe Pre Security (2026 path) module 5, Extending Your Network: port forwarding, stateful and stateless firewalls, VPNs, routers, switches and VLANs.
Lesson Note