Re: Local Slave copy of root zone

2018-08-21 Thread Doug Barton
On 08/21/2018 08:53 AM, Grant Taylor via bind-users wrote: On 08/20/2018 11:06 PM, Doug Barton wrote: But that doesn't mean that slaving a zone, any zone, including the root, is "dangerous." If slaving zones is dangerous, the DNS is way more fragile than it already is. Sorry, poor chose of

Re: Local Slave copy of root zone

2018-08-21 Thread Grant Taylor via bind-users
On 08/20/2018 11:06 PM, Doug Barton wrote: But that doesn't mean that slaving a zone, any zone, including the root, is "dangerous." If slaving zones is dangerous, the DNS is way more fragile than it already is. Sorry, poor chose of words. The last time I read the RFC discussing slaving the

Re: Local Slave copy of root zone

2018-08-20 Thread Doug Barton
On 08/20/2018 09:00 AM, Grant Taylor via bind-users wrote: On 08/20/2018 05:23 AM, Tony Finch wrote: If the local root zone gets corrupted somehow (maliciously or otherwise) the usual setup cannot detect a problem, but it'll cause DNSSEC validation failures downstream. The normal resolver /

Re: Local Slave copy of root zone

2018-08-20 Thread Grant Taylor via bind-users
On 08/20/2018 05:23 AM, Tony Finch wrote: If the local root zone gets corrupted somehow (maliciously or otherwise) the usual setup cannot detect a problem, but it'll cause DNSSEC validation failures downstream. The normal resolver / validator algorithm is more robust. The new mirror zone

Re: Local Slave copy of root zone

2018-08-20 Thread Tony Finch
Doug Barton wrote: > > How, specifically, is DNSSEC affected by the validating resolver having a > local copy of the root zone? If the local root zone gets corrupted somehow (maliciously or otherwise) the usual setup cannot detect a problem, but it'll cause DNSSEC validation failures downstream.

Re: Local Slave copy of root zone

2018-08-18 Thread Doug Barton
On 2018-08-15 10:43, Tony Finch wrote: Doug Barton wrote: Slaving the root and ARPA zones is a small benefit to performance for a busy resolver, [...] This technique is particularly useful for folks in bad/expensive network conditions. While the current anycast networks of root servers

Re: Local Slave copy of root zone

2018-08-16 Thread Michał Kępień
> BIND 9.14 will have an improved local root implementation (called a > "mirror" zone) which validates the zone so you don't blindly serve bogus > data. The feature is available now in the 9.13 dev branch; I have not > tried mirroring the arpa zones - the docs suggest that isn't a supported >

Re: Local Slave copy of root zone

2018-08-15 Thread Tony Finch
Doug Barton wrote: > > Slaving the root and ARPA zones is a small benefit to performance for a busy > resolver, [...] > This technique is particularly useful for folks in bad/expensive network > conditions. While the current anycast networks of root servers is much better > than it was "in the

Re: Local Slave copy of root zone

2018-08-15 Thread Doug Barton
On 08/15/2018 09:11 AM, Bob McDonald wrote: I've recently been investigating having a local slave copy of the root zone on a caching/forwarder type server. I've even put the local slave copy of the root zone into a separate view accessed via a different loopback address. (An limited example

Re: Local Slave copy of root zone

2018-08-15 Thread Bob McDonald
Thank you sir! I'll investigate the newer bind implementations. Regards. Bob On Wed, Aug 15, 2018 at 12:41 PM Tony Finch wrote: > Bob McDonald wrote: > > > I've recently been investigating having a local slave copy of the root > zone > > on a caching/forwarder

Re: Local Slave copy of root zone

2018-08-15 Thread Tony Finch
Bob McDonald wrote: > I've recently been investigating having a local slave copy of the root zone > on a caching/forwarder type server. I do this on my toy server for various strange reasons, and although it has worked OK I'm not confident it's really solid enough for production.

Local Slave copy of root zone

2018-08-15 Thread Bob McDonald
I've recently been investigating having a local slave copy of the root zone on a caching/forwarder type server. I've even put the local slave copy of the root zone into a separate view accessed via a different loopback address. (An limited example of this exists on the ISC site) My question