I've been curious about how the Xfinity WiFi guest network operates. Can someone explain it in simple terms? I hear a lot about VLANs, but I want to know if it's all about those or if there's more to it. How does Comcast manage to allocate two separate external IPs to their boxes for this purpose? What security measures are in place to protect this network? Also, I've seen videos about people hacking old 3G boosters; I'm wondering what kind of technology can be used in this context?
2 Answers
Honestly, this might fit better in conversations on forums like AskReddit, since the question seems broader than technical support.
To manage separate external IPs, Comcast operates similarly to having a block of public IP addresses allocated to a firewall. This way, they can efficiently distribute different IPs to different networks without needing multiple physical connections.
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