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- Text file for ipddp.c:
- AppleTalk-IP Decapsulation and AppleTalk-IP Encapsulation
- This text file is written by Jay Schulist <jschlst@samba.org>
- Introduction
- ------------
- AppleTalk-IP (IPDDP) is the method computers connected to AppleTalk
- networks can use to communicate via IP. AppleTalk-IP is simply IP datagrams
- inside AppleTalk packets.
- Through this driver you can either allow your Linux box to communicate
- IP over an AppleTalk network or you can provide IP gatewaying functions
- for your AppleTalk users.
- You can currently encapsulate or decapsulate AppleTalk-IP on LocalTalk,
- EtherTalk and PPPTalk. The only limit on the protocol is that of what
- kernel AppleTalk layer and drivers are available.
- Each mode requires its own user space software.
- Compiling AppleTalk-IP Decapsulation/Encapsulation
- =================================================
- AppleTalk-IP decapsulation needs to be compiled into your kernel. You
- will need to turn on AppleTalk-IP driver support. Then you will need to
- select ONE of the two options; IP to AppleTalk-IP encapsulation support or
- AppleTalk-IP to IP decapsulation support. If you compile the driver
- statically you will only be able to use the driver for the function you have
- enabled in the kernel. If you compile the driver as a module you can
- select what mode you want it to run in via a module loading param.
- ipddp_mode=1 for AppleTalk-IP encapsulation and ipddp_mode=2 for
- AppleTalk-IP to IP decapsulation.
- Basic instructions for user space tools
- =======================================
- I will briefly describe the operation of the tools, but you will
- need to consult the supporting documentation for each set of tools.
- Decapsulation - You will need to download a software package called
- MacGate. In this distribution there will be a tool called MacRoute
- which enables you to add routes to the kernel for your Macs by hand.
- Also the tool MacRegGateWay is included to register the
- proper IP Gateway and IP addresses for your machine. Included in this
- distribution is a patch to netatalk-1.4b2+asun2.0a17.2 (available from
- ftp.u.washington.edu/pub/user-supported/asun/) this patch is optional
- but it allows automatic adding and deleting of routes for Macs. (Handy
- for locations with large Mac installations)
- Encapsulation - You will need to download a software daemon called ipddpd.
- This software expects there to be an AppleTalk-IP gateway on the network.
- You will also need to add the proper routes to route your Linux box's IP
- traffic out the ipddp interface.
- Common Uses of ipddp.c
- ----------------------
- Of course AppleTalk-IP decapsulation and encapsulation, but specifically
- decapsulation is being used most for connecting LocalTalk networks to
- IP networks. Although it has been used on EtherTalk networks to allow
- Macs that are only able to tunnel IP over EtherTalk.
- Encapsulation has been used to allow a Linux box stuck on a LocalTalk
- network to use IP. It should work equally well if you are stuck on an
- EtherTalk only network.
- Further Assistance
- -------------------
- You can contact me (Jay Schulist <jschlst@samba.org>) with any
- questions regarding decapsulation or encapsulation. Bradford W. Johnson
- <johns393@maroon.tc.umn.edu> originally wrote the ipddp.c driver for IP
- encapsulation in AppleTalk.
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