[Pdns-users] Feature request: -disable-any-meta-query-type dns amplification attacks
facil77 at gmail.com
Sat Dec 19 18:37:13 UTC 2015
I just want to share this info for blocking dns amplification attacks
Merry Christmas !
On Fri, Dec 18, 2015 at 3:21 PM, Josh Sanders <facil77 at gmail.com> wrote:
> Thanks for your reply Bert,
> I am trying the iptables rules for stopping "questions"
> -m string --hex-string "|0000ff0001|" and not allowing
> to overload my small DNSs.
> On Fri, Dec 18, 2015 at 3:01 PM, bert hubert <bert.hubert at powerdns.com>
>> On Fri, Dec 18, 2015 at 02:50:22PM -0600, Josh Sanders wrote:
>> > Remote xxx.xxx.xxx.www wants 'domainD.com|ANY', do = 0, bufsize = 1680:
>> > packetcache MISS
>> > As you may see, 'any-to-tcp=yes' seems to be not working so far ...
>> Can you tcpdump? They could simply be sking the question, doesn't mean
>> have to *respect* your TC=1 answer. Since that is all we can do, set TC=1.
>> It does not stop the questions!
>> We do provide a really small answer that way, which stops the
>> from working.
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