Date: Tue, 07 Aug 2001 09:33:20 -0500 From: Christopher Schulte <christopher@schulte.org> To: Fernando Schapachnik <fschapachnik@vianetworks.com.ar>, "Douglas G. Allen" <dallen@roe35.lth2.k12.il.us> Cc: freebsd-security@FreeBSD.ORG Subject: Re: ipfw question Message-ID: <5.1.0.14.0.20010807093229.03c3eda0@pop.schulte.org> In-Reply-To: <20010807112610.H34971@ns1.via-net-works.net.ar> References: <200108070919280409.008598DB@mail.roe35.lth2.k12.il.us> <200108070719460362.001801FC@mail.roe35.lth2.k12.il.us> <200108070919280409.008598DB@mail.roe35.lth2.k12.il.us>
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At 11:26 AM 8/7/2001 -0300, Fernando Schapachnik wrote: >En un mensaje anterior, Douglas G. Allen escribi=F3: >[...] > > The ifconfig's are set up so that fxp0 is IP a.b.c.d netmask > > 255.255.255.192 and fxp0_alias is a.b.c.e netmask 255.255.255.255. > >255.255.255.255 is an invalid netmask (I don't even know why ifconfig >didn't rejected it). It should have the same netmask of the fxp0 >interface if what you mean is to have a machine with two IPs on the >same network. Not true;=20 http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/configtuning-virtu= al-hosts.html 'The calculation of alias netmasks is important, but fortunately quite=20 simple. For a given interface, there must be one address which correctly=20 represents the network's netmask. Any other addresses which fall within=20 this network must have a netmask of all 1's.' >Regards. > > >Fernando P. Schapachnik >Planificaci=F3n de red y tecnolog=EDa >VIA NET.WORKS ARGENTINA S.A. >fschapachnik@vianetworks.com.ar >Tel.: (54-11) 4323-3381 -c To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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