Guides

Short, practical explainers that go with the IP tool, with commands you can copy.

• How to check your public IP address from the terminalcurl, PowerShell and a small script that tells you when your IP changes.
• IPv4 vs IPv6: what is the difference, and do you need both?Address formats, NAT, dual stack and how to check what your connection supports.
• Public vs private IP addresses (and why yours keeps changing)RFC 1918 ranges, NAT, CGNAT and what it means for port forwarding.