Re: [Dnsmasq-discuss] dnsmasq and NXNSAttack

2020-05-22 Thread Petr Menšík
I think it is not, since it does not handle delegation itself. It uses
upstream resolvers to do that work for it. If upstream limits processed
redirections, it should be ok.

But that is just my personal opinion and might be wrong.

Regards,
Petr

On 5/21/20 1:26 AM, Neal P. Murphy wrote:
> Is dnsmasq vulnerable to NXNSAttack?
> 
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Petr Menšík
Software Engineer
Red Hat, http://www.redhat.com/
email: pemen...@redhat.com
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Re: [Dnsmasq-discuss] dnsmasq and NXNSAttack

2020-05-21 Thread Geert Stappers
On Wed, May 20, 2020 at 07:26:22PM -0400, Neal P. Murphy wrote:
> Is dnsmasq vulnerable to NXNSAttack?
 
Text from http://www.nxnsattack.com/

  The NXNSAttack is more effective than the NXDomain attack: i) It
  reaches an amplification factor of more than 1620x on the number of
  packets exchanged by the recursive resolver. ii) Besides the negative
  cache, the attack also saturates the ’NS’ resolver caches.


Regards
Geert Stappers
-- 
Silence is hard to parse

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[Dnsmasq-discuss] dnsmasq and NXNSAttack

2020-05-20 Thread Neal P. Murphy
Is dnsmasq vulnerable to NXNSAttack?

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