Re: (DNS) consensus wording

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