Re: [dns-privacy] [Ext] Revised opportunistic encryption draft

2020-11-16 Thread Peter van Dijk
On Sun, 2020-11-15 at 12:40 -0800, Brian Dickson wrote: > > > > Using TLSA records at _853._tcp. in a signed zone provides an > > > unambiguous signal to use optionally TLSA, in a downgrade-resistant > > > manner. > > > > Not downgrade-resistant, until NS names in delegations become signed. >

Re: [dns-privacy] how can we ADoT?

2020-11-16 Thread Tony Finch
Thanks for reading and providing feedback! Peter van Dijk wrote: > On Wed, 2020-11-11 at 19:07 +, Tony Finch wrote: > > > > * Encryption would apply to the server as a whole, whereas the > > working group consensus is that it should be possible for > > different zones on the same

Re: [dns-privacy] Amortization techniques for less popular name server names

2020-11-16 Thread Tony Finch
Brian Dickson wrote: > Attempting to do XFR for many name servers which are infrequently used > would have scalability issues from any resolver, if the server names are > in a large number of zones. One approach to reducing this issue is > aggregating server names inside many fewer zones. Doing

Re: [dns-privacy] Amortization techniques for less popular name server names

2020-11-16 Thread Brian Dickson
On Mon, Nov 16, 2020 at 5:28 PM Tony Finch wrote: > Brian Dickson wrote: > > > Attempting to do XFR for many name servers which are infrequently used > > would have scalability issues from any resolver, if the server names are > > in a large number of zones. One approach to reducing this issue

Re: [dns-privacy] [Ext] Revised opportunistic encryption draft

2020-11-16 Thread Brian Dickson
On Mon, Nov 16, 2020 at 2:02 AM Peter van Dijk wrote: > On Sun, 2020-11-15 at 12:40 -0800, Brian Dickson wrote: > > > > > > Using TLSA records at _853._tcp. in a signed zone provides > an unambiguous signal to use optionally TLSA, in a downgrade-resistant > manner. > > > > > > Not

Re: [dns-privacy] [Ext] Revised opportunistic encryption draft

2020-11-16 Thread Peter van Dijk
On Mon, 2020-11-16 at 10:22 -0800, Brian Dickson wrote: > > > That's a moot point. > > > TLSA records MUST be signed, and the TLSA RFC makes this very clear: RFC > > > 6698 section 4.1 (Determining whether a TLSA RRSet can be used MUST be > > > based on the > > >DNSSEC validation state (as