FAQ Community Software
Bridging and routing are two methods of linking systems via a VPN.
- Broadcasts traverse the VPN -- this allows software that depends on LAN broadcasts such as Windows NetBIOS file sharing and network neighborhood browsing to work.
- No route statements to configure.
- Works with any protocol that can function over ethernet, including IPv4, IPv6, Netware IPX, AppleTalk, etc.
- Relatively easy-to-configure solution for road warriors.
- Less efficient than routing, and does not scale well.
- Efficiency and scalability.
- Allows better tuning of MTU for efficiency.
- Clients must use a WINS server (such as samba) to allow cross-VPN network browsing to work.
- Routes must be set up linking each subnet.
- Software that depends on broadcasts will not "see" machines on the other side of the VPN.
- Works only with IPv4 in general, and IPv6 in cases where tun drivers on both ends of the connection support it explicitly.