Re: [DNSOP] Empty Non-Terminal vs NXDOMAIN in draft-ietf-dnsop-nsec-aggressiveuse

2016-10-18 Thread Warren Kumari
On Mon, Oct 10, 2016 at 6:15 PM, Mark Andrews wrote: > > In message <0be787cd-3877-48c0-8bf9-3e15f605d...@dnss.ec>, Roy Arends writes: >> On 10 Oct 2016, at 21:39, Mark Andrews wrote: >> >=20 >> >=20 >> > In message , Roy Arends = >> writes: >> >> Having read the draft >> >>=20 >> >> How does one

Re: [DNSOP] Empty Non-Terminal vs NXDOMAIN in draft-ietf-dnsop-nsec-aggressiveuse

2016-10-10 Thread Mark Andrews
In message <0be787cd-3877-48c0-8bf9-3e15f605d...@dnss.ec>, Roy Arends writes: > On 10 Oct 2016, at 21:39, Mark Andrews wrote: > >=20 > >=20 > > In message , Roy Arends = > writes: > >> Having read the draft > >>=20 > >> How does one distinguish a Empty Non-Terminal NODATA response from an > >> NX

Re: [DNSOP] Empty Non-Terminal vs NXDOMAIN in draft-ietf-dnsop-nsec-aggressiveuse

2016-10-10 Thread Roy Arends
On 10 Oct 2016, at 21:39, Mark Andrews wrote: > > > In message , Roy Arends writes: >> Having read the draft >> >> How does one distinguish a Empty Non-Terminal NODATA response from an >> NXDOMAIN response, solely by looking at the NSEC or NSEC3 records. > > NSEC: Find the NSEC record that pr

Re: [DNSOP] Empty Non-Terminal vs NXDOMAIN in draft-ietf-dnsop-nsec-aggressiveuse

2016-10-10 Thread Mark Andrews
In message , Roy Arends writes: > Having read the draft > > How does one distinguish a Empty Non-Terminal NODATA response from an > NXDOMAIN response, solely by looking at the NSEC or NSEC3 records. NSEC: Find the NSEC record that proves that there are no records at the given name (note all of t

[DNSOP] Empty Non-Terminal vs NXDOMAIN in draft-ietf-dnsop-nsec-aggressiveuse

2016-10-10 Thread Roy Arends
Having read the draft… How does one distinguish a Empty Non-Terminal NODATA response from an NXDOMAIN response, solely by looking at the NSEC or NSEC3 records. There is an attack vector where an RCODE0 can be replaced by RCODE3 while keeping the rest of the response completely intact, causing