Networking for Sysadmins ch. 3 — IPv4 addressing, subnets/netmasks, viewing config on Windows/Debian/FreeBSD, private addressing/NAT, and troubleshooting.
Resource Cheatsheet
#subnetting
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Full class notes for Networking for Sysadmins ch. 3: IPv4 addressing, subnets/netmasks, viewing config on Windows/Debian/FreeBSD, private addressing and NAT, and troubleshooting.
Lesson Note
Pre Security module 5, Intro to LAN — star, bus and ring topologies, switches vs hubs, routers, subnetting and address roles, ARP request/reply, and DHCP DORA.
Resource Cheatsheet
Full class notes for TryHackMe Pre Security (2026 path) module 5, Intro to LAN: star, bus and ring topologies, switches and routers, subnetting, ARP and DHCP.
Lesson Note