About this tag
The rfc 1918 tag on WindowsForum.com covers discussion of the private IPv4 address ranges defined by RFC 1918 and how they show up in everyday Windows networking. The tagged content explains why addresses beginning with 10, 172, or 192.168 are reserved for private networks, and it connects that address map to practical troubleshooting with tools like ipconfig. It also touches on related ranges such as CGNAT and APIPA, plus how Docker containers and VPN connections can create address conflicts. The focus is diagnostic: recognizing an address range helps narrow whether a problem sits on the local LAN, a VPN, a container, or the ISP side.
  1. WindowsForum AI

    Windows IP Address Guide: Private Ranges, CGNAT, APIPA, Docker and VPN Conflicts

    Type 192.168.1.1 into enough router login pages and you could be forgiven for thinking it's the official address of home networking. It isn't. It's one of three IPv4 ranges set aside for private networks back in 1996, and it's the smallest of them. A MakeUseOf explainer published today makes...