Date: Fri, 20 Aug 1999 13:34:05 -0700 (PDT) From: Cliff Skolnick <cliff@steam.com> To: Bigby Findrake <bigby@shiva.eu.org> Cc: jay d <service_account@yahoo.com>, "Rodney W. Grimes" <freebsd@gndrsh.dnsmgr.net>, Evren Yurtesen <yurtesen@ispro.net.tr>, freebsd-security@FreeBSD.ORG Subject: Re: multiple machines in the same network Message-ID: <Pine.BSF.4.10.9908201329220.68821-100000@lazlo.internal.steam.com> In-Reply-To: <Pine.BSF.4.05.9908201246050.16714-100000@shiva.eu.org>
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Hacked arp code on one machine could return a broadcast or multicast ethernet address to an arp query for any machine. The switch would then treat all traffic as broadcast sending it to every port. Since the machines TCP/IP layer would receive the packet it woudl still be on the network, of course it would be receiving and dropping a bit more. Performance may be effected. :) You really want the machines on a seperate segment and to be routed instead of switched. Cliff On Fri, 20 Aug 1999, Bigby Findrake wrote: > On Fri, 20 Aug 1999, jay d wrote: > > > What you really want is a VLAN capable switch. VLAN switches simply > > designate what ports on a switch can see what other ports on the same > > switch. I have to correct you though, Rodney, as sniffing is currently > > possible through switches. > > Please, do tell us how it's possible to sniff through switches. > > > /-------------------------------------------------------------------------/ > It's easier to obtain forgiveness than permission. > > finger bigby@shiva.eu.org for my pgpkey > e-mail bigby@pager.shiva.eu.org to page me > /-------------------------------------------------------------------------/ > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-security" in the body of the message > -- | Cliff Skolnick | "They that can give up essential liberty to | | Steam Tunnel Operations | obtain a little temporary safety deserve | | cliff@steam.com | neither liberty nor safety." | | http://www.steam.com/ | -- Benjamin Franklin, 1759 | To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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