Date: Thu, 22 Feb 2001 15:43:47 -0000 From: "Andy [TECC NOPS]" <andy@tecc.co.uk> To: "Brian" <wrath@shianet.org>, <freebsd-isp@freebsd.org> Subject: RE: Filtering connections to ftpd by mac address ? Message-ID: <NDBBKOKIGKLFGGPFHCGBIEDBCKAA.andy@tecc.co.uk> In-Reply-To: <00a701c09c7f$65c9af70$0101a8c0@fear.wrath.net>
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because the router is the gateway. When packets enter your LAN from the outside world they are actually coming from the ethernet port of your router. The IP address will appear to have come from the outside, but mac addresses are always local to the LAN they travel on. That's why routers are called just that, they route packets across LANs (mainly). Ak > -----Original Message----- > From: owner-freebsd-isp@FreeBSD.ORG > [mailto:owner-freebsd-isp@FreeBSD.ORG]On Behalf Of Brian > Sent: 22 February 2001 03:28 > To: freebsd-isp@freebsd.org > Subject: Re: Filtering connections to ftpd by mac address ? > > > I don't understand how this can be true. Why would you only be > able to see > the router's MAC? Maybe I'm more clueless than I thought. > > brian@wrath.com > > ----- Original Message ----- > From: "Colin Campbell" <sgcccdc@citec.qld.gov.au> > To: "David Wilson" <davew@sai.co.za> > Cc: "FreeBSD Mailing List" <freebsd-isp@FreeBSD.ORG> > Sent: Wednesday, February 21, 2001 4:59 PM > Subject: Re: Filtering connections to ftpd by mac address ? > > > > Hi, > > > > Filtering on MAC address is very restricted. You can only do machines on > > the same network segment. After that all you see is the router's MAC > > address. > > > > Colin > > > > On Wed, 21 Feb 2001, David Wilson wrote: > > > > > Hi guys, howzit going ? > > > > > > Any ideas on how to filter connections to ftpd based on mac address ? > ;-) > > > I have looked into ipfw and tcp wrappers, but both only seem > to be able > to > > > do IP addresses. > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-isp" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message
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