Background: I am very naive about how bridging works. I wanted to know bridging interfaces exposes devices on both ends of the bridge to communicate?


  • How secure is the openvpn tap interface?
  • Since it is a bridge interface will people be able to see traffic from a dlna server I have on my home network?
  • What about regular interface bridging. If I were to bridge two interfaces on a machine, can machines on both ends see each other?

1 Answer 1


Bridging works like a filter. It is up to your bridging configuration to decide which packets get through to the network. If you are concerned about the visibility of particular hosts, you can use nmap to scan your network from both sides of the bridge and confirm what hosts you see from either side.

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