Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!munnari.oz.au!cs.mu.OZ.AU!cs.mu.oz.au!kre From: kre@cs.mu.oz.au (Robert Elz) Newsgroups: comp.mail.sendmail Subject: Re: More problems with sendmail/IDA and DECnet Message-ID: Date: 12 Jun 91 00:12:32 GMT References: <1991Jun11.173526.15436@njitgw.njit.edu> <1991Jun11.182958.18722@mp.cs.niu.edu> <1991Jun11.223410.4007@solbourne.com> Sender: news@cs.mu.OZ.AU Organization: Comp Sci, University of Melbourne, Australia Lines: 11 kucharsk@solbourne.com (William Kucharski) writes: >I've seen more than a few systems that want to keep >internal network details from the Internet yet which run DNS. That's security through obscurity, and it doesn't work. Much better would be to install filters on the gateway, and prevent packets getting near hosts that aren't supposed to receive them, than to try and keep name->address translations hidden from the world. kre