From: "Peter Müller" <peter.mueller@link38.eu>
To: development@lists.ipfire.org
Subject: Re: [PATCH 2/3] Unbound: Use caps for IDs
Date: Thu, 23 Aug 2018 21:15:44 +0200 [thread overview]
Message-ID: <0af7be2f-4c01-4ac1-235f-8797de6822ff@link38.eu> (raw)
In-Reply-To: <d3fcd3426230ecae1b1df91c97b7309dc8f92996.camel@ipfire.org>
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Hello,
> This was deliberately not enabled because the documentation contains a
> warning about various incompatibilities with various other DNS servers.
Yes, there are a lot of broken DNS servers out there...
>
> Is there some sort of study saying that this can be safely enabled?
I know people operating DNS resolvers for > 30k customers with this setting
enabled. They never experienced any issue with this so far. This is enabled
on my systems too.
Currently, I am not aware of a public study.
Best regards,
Peter Müller
>
> -Michael
>
> On Sun, 2018-08-19 at 20:11 +0200, Peter Müller wrote:
>> Attempt to detect DNS spoofing attacks by inserting 0x20-encoded
>> random bits into upstream queries. Upstream documentation claims
>> it to be an experimental implementation, it did not cause any trouble
>> on productive systems here.
>>
>> See https://nlnetlabs.nl/documentation/unbound/unbound.conf/ for
>> further details.
>>
>> Signed-off-by: Peter Müller <peter.mueller(a)link38.eu>
>> ---
>> config/unbound/unbound.conf | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/config/unbound/unbound.conf b/config/unbound/unbound.conf
>> index fa2ca3fd4..8b5d34ee3 100644
>> --- a/config/unbound/unbound.conf
>> +++ b/config/unbound/unbound.conf
>> @@ -59,7 +59,7 @@ server:
>> harden-below-nxdomain: yes
>> harden-referral-path: yes
>> harden-algo-downgrade: no
>> - use-caps-for-id: no
>> + use-caps-for-id: yes
>>
>> # Harden against DNS cache poisoning
>> unwanted-reply-threshold: 5000000
>
--
Microsoft DNS service terminates abnormally when it recieves a response
to a DNS query that was never made. Fix Information: Run your DNS
service on a different platform.
-- bugtraq
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next prev parent reply other threads:[~2018-08-23 19:15 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-19 18:11 Peter Müller
2018-08-23 13:40 ` Michael Tremer
2018-08-23 19:15 ` Peter Müller [this message]
2018-08-24 11:51 ` Michael Tremer
2018-08-27 15:26 ` [PATCH 2/3 v2] " Peter Müller
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