Captive gateways can work in Routed Mode or in Bridged Mode. What does that mean?
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Answer / chaitanya
In Routed Mode the captive gateway must work as an IP router and is configured as the default gateway on each client associated with the wireless network. For this reason, the IP subnet for the WiFi LAN part is different from the subnet on the rest of the network.
Instead, in Bridged Mode the gateway is a layer 2 bridge that joins the protected LAN segment with the rest of the network. The most obvious advantages of this method is that clients can have the same IP addresses independent of whether they are located on WI-FI or on the wired LAN. It is also obvious that not only IP protocol can transit from one part to another, but also any other protocol encapsulated in the Ethernet frames. In particular, if you consider that in bridged mode the level 2 broadcast is also forwarded, on the Wi-Fi network there is no need to activate a dhcp server to attribute the addresses, however you may avail of the server present on the rest of the LAN.
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