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by ytch
145 days ago
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The basic workflow at Gateway side is inspecting all HTTP port 80 traffic (with iptables or others), If the URL is about internet detection, reply a 301 redirect to the captive portal URL. But the URL is too complex among different vendor: https://captivebehavior.wballiance.com/ I don't know why, even I tracked the URLs, sometimes it still fails (OS refuse connecting to the URL?). DHCP option 114 (RFC8908) can advertise the URL to client directly, but it is not widely supported: https://developer.apple.com/news/?id=q78sq5rv |
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