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Explaining Network Bridges
A network bridge is a device that lets two networks talk to each other. These networks might be the same type of network, like two ethernet networks, or different networks, like an ethernet network and PNA network.
This is an example of an Ethernet Network bridged to a PNA Phone Line network. The device in the middle, the bridge, lets computers in the PNA network to talk to computers and devices in the Ethernet network - and the other way too. The computers in the PNA network could even use an internet connection that was on the Ethernet Network (like a cable modem router)
When your networks are bridged, they act just like one big network. There are rarely sharing restrictions like there are in routed or NAT'ed solutions.
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