Path: utzoo!utgpu!watserv1!watmath!att!linac!pacific.mps.ohio-state.edu!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!ira.uka.de!smurf!urlichs From: urlichs@smurf.sub.org (Matthias Urlichs) Newsgroups: comp.protocols.appletalk Subject: Re: A/UX 2.0 as a LocalTalk <-> Ethernet bridge? Keywords: software solution? Message-ID: Date: 1 May 91 02:31:44 GMT References: <3071@redstar.cs.qmw.ac.uk> Organization: University of Karlsruhe, FRG Lines: 31 In comp.protocols.appletalk, article <3071@redstar.cs.qmw.ac.uk>, liam@cs.qmw.ac.uk (William Roberts;) writes: < In sven@helix.cshl.org (Sven Dietrich) writes: < < > Is is possible to use the IIfx as a gateway to the Internet (the IIfx < >presumably would be hooked up) if the other Macs on the Appletalk network < < In principle it should be straightforward: the steps are: < Hmmm... 1) turn on IP forwarding in the A/UX kernel, 2) implement an IP interface which can route packets back to a user program, 3) write the program which forwards these packets onto Appletalk and vice versa, 3a) write a sensible user interface for (3), 4) either figure out how to do ARP for the Localtalk Macs, or use an unique (sub)net. (1) is easy, (2) exists (I wrote it last week); if anybody wants to write (3), go ahead. I don't have the time. I can mail the driver for (2) to anybody who wants it. (4) I don't know about. Does anybody know if it's possible to convince one Mac under A/UX to do proxy ARP for other IP addresses? It seems that this requires some kernel hackery. If neither that nor subnetting works in some situation, another machine would have to do proxy ARP for this setup. -- Matthias Urlichs -- urlichs@smurf.sub.org -- urlichs@smurf.ira.uka.de /(o\ Humboldtstrasse 7 - 7500 Karlsruhe 1 - FRG -- +49-721-621127(0700-2330) \o)/