Re: [dns-operations] Looking for zones using white lies (RFC 4470)

2023-01-27 Thread Paul Ebersman
shuque> The UltraDNS implementation doesn't use the more precise white
shuque> lies epsilon function defined in the spec, but it is probably
shuque> good enough for all practical purposes.

shuque> And it's much closer to white lies than "black" lies, because it
shuque> preserves the correct semantics of NXDOMAIN.

That's actually a pretty good summary already. Basically a "loose" white
lies that was computationally less intensive while trying to be as close
to the RFC as was practical.
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Re: [dns-operations] Looking for zones using white lies (RFC 4470)

2023-01-27 Thread Shumon Huque
On Fri, Jan 27, 2023 at 11:16 AM Paul Ebersman <
list-dns-operati...@dragon.net> wrote:

> shuque> UltraDNS (Neustar Security Services) is known to use NSEC White
> shuque> Lies. I have a test zone there,
>
> shuque> which you can examine: "[[ultratest.huque.com]]".
>
> My recollection is that the NSS implementation is really grey lies,
> i.e. not quite RFC white lies but not fully black like cloudflare.
>

Paul - what's the definition of "grey lies"?

The UltraDNS implementation doesn't use the more precise white lies
epsilon function defined in the spec, but it is probably good enough for
all practical purposes.

And it's much closer to white lies than "black" lies, because it preserves
the correct semantics of NXDOMAIN.

Shumon.
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Re: [dns-operations] Looking for zones using white lies (RFC 4470)

2023-01-27 Thread Paul Ebersman
shuque> UltraDNS (Neustar Security Services) is known to use NSEC White
shuque> Lies. I have a test zone there,

shuque> which you can examine: "[[ultratest.huque.com]]".

My recollection is that the NSS implementation is really grey lies,
i.e. not quite RFC white lies but not fully black like cloudflare.
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Re: [dns-operations] Looking for zones using white lies (RFC 4470)

2023-01-27 Thread Shumon Huque
On Fri, Jan 27, 2023 at 3:39 AM Stephane Bortzmeyer 
wrote:

> On Fri, Jan 27, 2023 at 12:19:18AM -0500,
>  Viktor Dukhovni  wrote
>  a message of 30 lines which said:
>
> > Three sample zones:
>
> They all seem to use black lies, not white lies.
>

I took a quick look:

* herokudns.com is definitely "black" ("minimal"?) lies, hosted on NS1,
which uses that method.
* cfcualerts.com appears to use normal pre-computed NSEC3.
* technohazard.io - no idea; my attempts at eliciting negative responses
result in SERVFAIL.

UltraDNS (Neustar Security Services) is known to use NSEC White Lies. I
have a test zone there,
which you can examine: "ultratest.huque.com".

$ dig +dnssec foobar.nxd.ultratest.huque.com. A +noall +authority
!~.nxd.ultratest.huque.com. 1792 IN RRSIG   NSEC 13 5 1800
20230722123724 20230123123724 39543 ultratest.huque.com.
q+TWfjkPmlWs/xVBsZu3kiWyhUqcZJWjq2U28BVoLcT8kCacqjRF1NKM
qEss4HsL9VxpAlq7AfRarczZwNtBaA==
!~.nxd.ultratest.huque.com. 1792 IN NSEC-.nxd.ultratest.huque.com.
RRSIG NSEC
foobaq~.nxd.ultratest.huque.com. 1792 IN RRSIG  NSEC 13 5 1800
20230722123724 20230123123724 39543 ultratest.huque.com.
UM1w+ZxUTUXCZ/T8xD5cOHOgrJaBHJM7UPFTOs4UlMjkbRcK3L7eEn8M
/36nCgTfQNk+cllamUqr5CJ+FuUDFw==
foobaq~.nxd.ultratest.huque.com. 1792 IN NSEC   foobar!.
nxd.ultratest.huque.com. RRSIG NSEC
ultratest.huque.com.1792IN  SOA dns01.salesforce.com.
hostmaster.salesforce.com. 2019101692 1800 900 2592000 1800
ultratest.huque.com.1792IN  RRSIG   SOA 13 3 1800
20230722123724 20230123123724 39543 ultratest.huque.com.
6nhsLNAUv0TYiA6Gp0evnicallUmMEsr0T9qK3GvmkxVy+8FC9v2DsUR
rp+o7/QMjKl+dvYncQcIspRZmUlgZw==

Shumon.
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Re: [dns-operations] Looking for zones using white lies (RFC 4470)

2023-01-27 Thread Stephane Bortzmeyer
On Fri, Jan 27, 2023 at 12:19:18AM -0500,
 Viktor Dukhovni  wrote 
 a message of 30 lines which said:

> Three sample zones:

They all seem to use black lies, not white lies.

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