[DNSOP] draft-fujiwara-dnsop-fragment-attack-01.txt

2019-03-01 Thread fujiwara
Dear DNSOP, I submitted draft-fujiwara-dnsop-fragment-attack-01. https://tools.ietf.org/html/draft-fujiwara-dnsop-fragment-attack-01 It summarized DNS cache poisoning attack using IP fragmentation and countermeasures. If the draft is interested, I will request timeslot at IETF 104. I think

Re: [DNSOP] I-D Action: draft-ietf-dnsop-serve-stale-03.txt

2019-03-01 Thread Dave Lawrence
Bob Harold writes: > Will the "resolution recheck timer" cause ttl's less than the timer > to be effectively lengthened, by refusing to look them up again? I > think 'serve-stale' should focus on the situation where the auth > server is not available, and not change the handling of short ttl's. >

Re: [DNSOP] [Ext] I-D Action: draft-ietf-dnsop-serve-stale-03.txt

2019-03-01 Thread Paul Hoffman
On Mar 1, 2019, at 9:33 AM, Dave Lawrence wrote: > > Bob Harold writes: >> Will the "resolution recheck timer" cause ttl's less than the timer >> to be effectively lengthened, by refusing to look them up again? I >> think 'serve-stale' should focus on the situation where the auth >> server is no

Re: [DNSOP] [Ext] I-D Action: draft-ietf-dnsop-serve-stale-03.txt

2019-03-01 Thread Paul Hoffman
Following up on my previous message: The document is actively confusing about recommendations. - Section 4 has the actual update to the RFC 1035, and that update contains MAY and SHOULD statements. - Section 5 is called "Example Method" but also contains recommendations. - Section 6, "Implemen

Re: [DNSOP] draft-fujiwara-dnsop-fragment-attack-01.txt

2019-03-01 Thread Mark Andrews
Or one can use TSIG with a well known key to get a cryptograph hash of the response. Below is how how the servers for the Alexa to 1 Million handle unexpected TSIG. It’s well under a day to add this to a recursive server that supports TSIG already. It’s a couple of minutes of configuration ti

Re: [DNSOP] [Ext] I-D Action: draft-ietf-dnsop-serve-stale-03.txt [and 1 more messages]

2019-03-01 Thread Dave Lawrence
Paul Hoffman writes: > I'm not sure a standards track document that updates RFC 1034/1035 > should be recommending a minimum TTL. As previously noted, we're making no such recommendation and that will be clarified. The first definition of "resolution recheck timer" in section 5 does already say

[DNSOP] dnsop - Requested sessions have been scheduled for IETF 104

2019-03-01 Thread "IETF Secretariat"
Dear Tim Wicinski, The session(s) that you have requested have been scheduled. Below is the scheduled session information followed by the original request. dnsop Session 1 (2:00 requested) Tuesday, 26 March 2019, Afternoon Session I 1350-1550 Room Name: Congress Hall 2 size: 350

Re: [DNSOP] [Ext] I-D Action: draft-ietf-dnsop-serve-stale-03.txt [and 1 more messages]

2019-03-01 Thread Paul Hoffman
> On Mar 1, 2019, at 12:54 PM, Dave Lawrence wrote: > > Paul Hoffman writes: >> I'm not sure a standards track document that updates RFC 1034/1035 >> should be recommending a minimum TTL. > > As previously noted, we're making no such recommendation and that will > be clarified. "Attempts

Re: [DNSOP] draft-fujiwara-dnsop-fragment-attack-01.txt

2019-03-01 Thread 神明達哉
At Fri, 01 Mar 2019 21:14:48 +0900 (JST), fujiw...@jprs.co.jp wrote: > Dear DNSOP, > > I submitted draft-fujiwara-dnsop-fragment-attack-01. > >https://tools.ietf.org/html/draft-fujiwara-dnsop-fragment-attack-01 > > It summarized DNS cache poisoning attack using IP fragmentation > and counterme

Re: [DNSOP] draft-fujiwara-dnsop-fragment-attack-01.txt

2019-03-01 Thread Paul Vixie
Mark Andrews wrote on 2019-03-01 12:00: Or one can use TSIG with a well known key to get a cryptograph hash of the response. ... i prefer this approach. no matter how bad fragmentation was in V4 and no matter how much worse it is in V6, we must not lock ourselves into packets whose size is

Re: [DNSOP] Adding more example configurations to draft-ietf-dnsop-7706bis

2019-03-01 Thread Wes Hardaker
Michał Kępień writes: > zone "." { > type mirror; > }; Cool feature, and thanks for adding it. It'll certainly make writing LocalRoot config updates easier. Questions though: 1) In this state, does it accept notifications for triggering zone refreshing (which is one of the fea