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wireless_appletalk_ss_bii_osx [2014/05/31 18:43] – nucarwireless_appletalk_ss_bii_osx [2015/04/04 21:42] – [How It Works] nucar
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 ====== Wireless AppleTalk Networking with SheepShaver & Basilisk II for OS X ====== ====== Wireless AppleTalk Networking with SheepShaver & Basilisk II for OS X ======
  
-(Last updated May 31, 2014.  The forum thread is [[http://www.emaculation.com/forum/viewtopic.php?f=20&t=8324|here]].)+(Last updated April 5, 2015.  The forum thread is [[http://www.emaculation.com/forum/viewtopic.php?f=20&t=8324|here]].)
  
 ===== Introduction ===== ===== Introduction =====
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 A bridge-mode OpenVPN server can tunnel any ethernet frame over a single port, preferably a UDP port.  Therefore, AppleTalk packets, encapsulated into UDP packets, can survive over the IP-only wireless signal.  This also implies that all ethernet activity on the network can be extended over the Internet to remote OpenVPN clients. A bridge-mode OpenVPN server can tunnel any ethernet frame over a single port, preferably a UDP port.  Therefore, AppleTalk packets, encapsulated into UDP packets, can survive over the IP-only wireless signal.  This also implies that all ethernet activity on the network can be extended over the Internet to remote OpenVPN clients.
  
-Obviously the main challenge here is to set up the OpenVPN server. A bridge-mode OpenVPN server is an extremely powerful tool that everyone should know about.  It can be run using free software only and allows you to extend all layer-2 LAN communication over wireless and over the Internet.  The guide for setting up such a server in a Linux VM is here:+Obviously the main challenge here is to set up the OpenVPN server. A bridge-mode OpenVPN server is an extremely powerful tool that everyone should know about.  It can be run using free software only and allows you to extend all layer-2 LAN communication over wireless and over the Internet.  The guide for setting up such a server in a Linux VM (on a Mac or Windows PC) is here:
  
 http://www.emaculation.com/doku.php/bridged_openvpn_server_setup http://www.emaculation.com/doku.php/bridged_openvpn_server_setup
  
 To be clear, the VPN must make use of ethernet bridging.  Most VPNs are the layer-3 routed type and will not work. To be clear, the VPN must make use of ethernet bridging.  Most VPNs are the layer-3 routed type and will not work.
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 ===== Connecting the Emulator to the VPN ===== ===== Connecting the Emulator to the VPN =====
  
-After connecting to the OpenVPN server, set the emulator to use tap1 as its ethernet interface, then bridge that interface as described in [[http://www.emaculation.com/doku.php/appletalk_for_sheepshaver|the AppleTalk guide]] with OpenVPN's tap0 interface instead of your ethernet interface. For example, the script for starting SheepShaver in OS X 10.8 and up could look like:+After connecting to the OpenVPN server, set the emulator to use tap1 as its ethernet interface, then bridge that interface as described in [[http://www.emaculation.com/doku.php/appletalk_for_sheepshaver|the AppleTalk guide]] with OpenVPN's tap0 interface instead of your ethernet interface. For example, the script for starting SheepShaver in OS X 10.7 and up could look like:
  
 <code>sudo /*path to SheepShaver folder*/SheepShaver.app/Contents/MacOS/SheepShaver & sleep 10 <code>sudo /*path to SheepShaver folder*/SheepShaver.app/Contents/MacOS/SheepShaver & sleep 10
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 sudo ifconfig bridge1 up</code> sudo ifconfig bridge1 up</code>
  
-Remote clients over the Internet must use the private IP addresses for the OpenVPN server side's LAN, not addresses for their own LAN, in the TCP/IP or MacTCP control panels. Note that bridge1 is used instead of bridge0 because OS X 10.9 Mavericks sets up a "Thunderbolt Bridge" interface that uses bridge0. You can use bridge1 without having a bridge0 interface.+Remote clients over the Internet must use the private IP addresses for the OpenVPN server side's LAN, not addresses for their own LAN, in the TCP/IP or MacTCP control panels. Note that bridge1 is used instead of bridge0 because OS X 10.9 Mavericks and later may have a "Thunderbolt Bridge" interface that uses bridge0. You can use bridge1 without having a bridge0 interface.
  
 In order to run the Linux VM and a networked emulator in the host OS simultaneously, the host must connect to the OpenVPN server as a client, and connect the emulator using the method above.  The regular method of bridging the ethernet interface with the emulator's TAP interface cannot be used because a single ethernet interface cannot be a member of a bridge interface in the host and a bridge interface in the VM simultaneously.  The second bridge to go up may not work properly. In order to run the Linux VM and a networked emulator in the host OS simultaneously, the host must connect to the OpenVPN server as a client, and connect the emulator using the method above.  The regular method of bridging the ethernet interface with the emulator's TAP interface cannot be used because a single ethernet interface cannot be a member of a bridge interface in the host and a bridge interface in the VM simultaneously.  The second bridge to go up may not work properly.