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Xref: sserve comp.os.386bsd.questions:16004 comp.os.ms-windows.networking.tcp-ip:6892 Path: sserve!newshost.anu.edu.au!harbinger.cc.monash.edu.au!news.mira.net.au!news.netspace.net.au!serval.net.wsu.edu!netnews.nwnet.net!oracle.pnl.gov!osi-east2.es.net!lll-winken.llnl.gov!sol.ctr.columbia.edu!howland.reston.ans.net!news.sprintlink.net!sundog.tiac.net!usenet From: phl@cyways.com (Peter H. Lemieux) Newsgroups: comp.os.386bsd.questions,comp.os.ms-windows.networking.tcp-ip Subject: Re: Point to Point over Ethernet? Date: 16 Jan 1995 02:20:05 GMT Organization: cyways, inc., Watertown, MA, 02172, USA Lines: 34 Message-ID: <3fcl4l$93e@sundog.tiac.net> References: <3f4f6r$gq0@nntp.Stanford.EDU> NNTP-Posting-Host: cyways.tiac.net X-Newsreader: WinVN 0.92.6+ In article <3f4f6r$gq0@nntp.Stanford.EDU>, yoda@rescomp.Stanford.EDU (Terry Lee) says: > >PPP allows the two point computers to share the same internet address right? >So if I have my BSD system running PPP to my internet service provider, I can >run local PPP connections to this central BSD system sharing the same IP >address assigned by the ISP without having to pay for class C assignment. >Right? I think only one internal PPP connection is possible using proxy ARP (see below), but I might be wrong. >The real question: Is there any way to accomplish this (sharing one IP >address accross a small lan) using ethernet as the medium instead of >serial lines in a star-lan configuration? Ideally, a central BSD system >hooked up to the internet, and Windows and Macs on ethernet accessing the >internet via the central server sharing the same IP address. > You should be able to configure the routing on the BSD machine to forward packets from the non-Internet machine without using PPP. You'll also need to set up proxy ARP on the BSD machine to enable "sharing the same IP address." The medium (Ethernet or serial) shouldn't matter. But why not get a Class-C? I got a full class-C for free just by asking. Or maybe your provider would give you a class-C subnet. Have you asked? Peter Dr. Peter H. Lemieux, President cyways, inc Voice: +1 (617) 924-7991 203 Arlington Street Fax: +1 (617) 926-8440 Watertown, Massachusetts 02172-2036 USA Internet: phl@cyways.com