- From: Donald E. Eastlake 3rd <dee@cybercash.com>
- Date: Tue, 2 Apr 1996 17:26:54 -0500 (EST)
- To: "David W. Morris" <dwm@shell.portal.com>
- Cc: http-wg%cuckoo.hpl.hp.com@hplb.hpl.hp.com
You are not supposed to do negative caching with a time larger than the zone SOA MINIMUM field. See section 4.3.4 of RFC 1034. Donald On Sun, 31 Mar 1996, David W. Morris wrote: > Date: Sun, 31 Mar 1996 18:43:00 -0800 (PST) > From: David W. Morris <dwm@shell.portal.com> > To: Anawat Chankhunthod <chankhun@catarina.usc.edu> > Cc: http-wg%cuckoo.hpl.hp.com@hplb.hpl.hp.com > Subject: Re: (DNS) consensus wording > > > > On Sat, 30 Mar 1996, Anawat Chankhunthod wrote: > > > I have some additional ideas. Danzig., et.al (SIGCOMM92 ??) shows that > > NEGATIVE caching DNS will help to reduce DNS traffic quite a bit. > > Negative cache means when DNS lookup fail (may be after 2-3 trails) for > > that particular host, we should cache the result (the failure) for a short > > time to avoid subsequent look up (which likely to fail again). Say 2 minutes. > > While this is a useful suggestion, it doesn't fall in the domain of being > a security issue. It might be considered for an HTTP implementation > recommendations document. > > Dave Morris > > ===================================================================== Donald E. Eastlake 3rd +1 508-287-4877(tel) dee@cybercash.com 318 Acton Street +1 508-371-7148(fax) dee@world.std.com Carlisle, MA 01741 USA +1 703-620-4200(main office, Reston, VA) http://www.cybercash.com http://www.eff.org/blueribbon.html
Received on Tuesday, 2 April 1996 14:35:19 UTC