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I purchased Mountain Lion Server for our office thinking that Bonjour would automatically enable any computers connected via VPN to see all computers and applications (such as Bento) running on the office network. The hope was that those of us working at home would feel just like we were in the office, with all network services working transparently over the VPN connection. However, I see that Bonjour (aka mDNS) is not enabled to work over the VPN by default.

Can I configure Mountain Lion Server to automatically pass Bonjour traffic over the VPN? Is there any reason not to do this?

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dns-sd.org has some good information on Wide-Area Bonjour setup. –  charlesbridge Nov 5 '12 at 21:37

1 Answer 1

If you use a L2 VPN setup, then broadcasts like mDNS should work just fine as long as VPN clients are on the same subnet as everything else.

If you use a L3 VPN solution, then you'll have to use a technology that can handle mDNS across broadcast domains. Allowing the 224.0.0.251 multicast group across routes should do this usually.

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I'm using L2TP (which I assume is the L2 you speak of), and I believe I've got the same subnet (IP Addresses are 10.0.1.* with subnet masks of 255.255.255.0 for both local machines and VPN clients). Is there something else that could be getting in the way of Bonjour packets crossing the VPN tunnel? –  Ben Coppock Nov 7 '12 at 21:20
    
yes if the VPN connected computer has the same IP for its router like the VPN servers router has, which causes the VPN connection to confuse where to reach the server with which namespace. there was a hint to change the servers router IP to something which can hopefully not cross other IP adresses at the client side –  user171888 May 14 '13 at 0:56

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