Re: [DNSOP] Wildcard junk vs NXDOMAIN junk

2022-04-07 Thread Paul Vixie
Mark Andrews wrote on 2022-04-07 17:21: On 8 Apr 2022, at 09:12, Paul Vixie wrote: ... wildcard synthesis should always have been resolver-side. now we live like this. a zero-length EDNS option with a name like REALWILD that asked the authority server to include *.example.com as an answer'

Re: [DNSOP] Wildcard junk vs NXDOMAIN junk

2022-04-07 Thread Mark Andrews
> On 8 Apr 2022, at 09:12, Paul Vixie wrote: > Brian Dickson wrote on 2022-04-07 14:26: >> ... >> However, that does provide motivation for (a) signing zones, and (b) >> resolvers doing validation with synthesis. >> Together, those reduce (a) load on auth servers, and (b) cache pollution. >> W

Re: [DNSOP] Wildcard junk vs NXDOMAIN junk

2022-04-07 Thread Paul Vixie
Brian Dickson wrote on 2022-04-07 14:26: ... However, that does provide motivation for (a) signing zones, and (b) resolvers doing validation with synthesis. Together, those reduce (a) load on auth servers, and (b) cache pollution. Win/win. if those pigs had wings, they could indeed fly. (t

Re: [DNSOP] Wildcard junk vs NXDOMAIN junk

2022-04-07 Thread Brian Dickson
On Thu, Apr 7, 2022 at 9:51 AM John R. Levine wrote: > A friend of mine asserts that wildcard DNS records are a problem because > hostile clients can use them to fill up DNS caches with junk answers to > random queries that match a wildcard. But it seems to me that you can do > it just as well w

Re: [DNSOP] Wildcard junk vs NXDOMAIN junk

2022-04-07 Thread Patrik Fältström
On 7 Apr 2022, at 18:50, John R. Levine wrote: > A friend of mine asserts that wildcard DNS records are a problem because > hostile clients can use them to fill up DNS caches with junk answers to > random queries that match a wildcard. But it seems to me that you can do it > just as well with

[DNSOP] Wildcard junk vs NXDOMAIN junk

2022-04-07 Thread John R. Levine
A friend of mine asserts that wildcard DNS records are a problem because hostile clients can use them to fill up DNS caches with junk answers to random queries that match a wildcard. But it seems to me that you can do it just as well with random queries that match nothing and fill up the cache