nanog mailing list archives
Re: data request on Sitefinder
From: "Howard C. Berkowitz" <hcb () gettcomm com>
Date: Mon, 20 Oct 2003 17:17:38 -0400
At 5:09 PM -0400 10/20/03, Valdis.Kletnieks () vt edu wrote:
On Mon, 20 Oct 2003 16:31:45 EDT, "Steven M. Bellovin" <smb () research att com> said:A number of people havce responded that they don't want to be forced to pay for a change that will benefit Verisign. That's a policy issue I'm trying to avoid here. I'm looking for pure technical answers -- how much lead time do you need to make such changes safely?OK, since you asked.... At least from where I am, the answer will depend *heavily* on whether Verisign deploys something that an end-user program can *reliably* detect if it's been fed a wildcard it didn't expect. Note that making a second lookup for '*.foo'and comparing the two answers is specifically *NOT* acceptable due to the addedlookup latency (and to some extent, the attendant race conditions and failure modes as well). Also note that it has to be done in a manner that can be tested by an application - there will be a *REAL* need for things like Sendmail to be able to test for wildcards *without the assistance* of a patched local DNS.And yes, this means the minimum lead time to deploy is 'amount of time to writea "Wildcard Reply Bit" I-D, advance through IETF to some reasonable point on standards track, and then upgrade DNS, end host resolvers, and applications'.
You make an assumption here -- one with which I agree completely -- but that certainly wasn't followed during the Sitefinder debacle. The assumption is that the IETF provides a tested mechanism for disseminating information and making comments.
Verisign claims that they had tested their ideas with a Verisign-selected group of organizations, and made their commercial decisions based on the proprietary data it generated from those organizations.
Current thread:
- Re: Re[2]: data request on Sitefinder, (continued)
- Re: Re[2]: data request on Sitefinder todd glassey (Oct 20)
- Re[4]: data request on Sitefinder Richard Welty (Oct 20)
- Dos attack? Eric Frazier (Oct 20)
- Re: data request on Sitefinder Jack Bates (Oct 20)
- Re: data request on Sitefinder Howard C. Berkowitz (Oct 21)
- Re: data request on Sitefinder Owen DeLong (Oct 21)
- Re: data request on Sitefinder Jack Bates (Oct 21)
- Re: data request on Sitefinder Owen DeLong (Oct 21)
- Re: data request on Sitefinder Howard C. Berkowitz (Oct 21)
- Re: data request on Sitefinder Howard C. Berkowitz (Oct 20)
- Re: data request on Sitefinder Bruce Campbell (Oct 21)
- Re: data request on Sitefinder Kee Hinckley (Oct 20)