IP Addressing
IPv4, subnetting, IPv6, and public vs private address space.
1. IPv4 Addressing
Read IPv4 addresses, subnet masks, and CIDR notation—the language of routing.
15 min
+24 XP
2. Subnetting Basics
Split networks with subnet masks and calculate usable host ranges.
15 min
+24 XP
3. IPv6 Introduction
Why IPv6 exists, how addresses look, and what changes for defenders.
15 min
+24 XP
4. Public vs Private IP
RFC1918 private ranges, NAT, and why your home IP differs from your server's.
15 min
+24 XP
5. Quiz — IP Addressing
10-question quiz on IPv4, subnets, IPv6, and public vs private IPs.
10 min
+24 XP