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Author Topic: DNS external attacks  (Read 19667 times)
phqr58
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« on: Friday 02 October 2015, 02:29:15 am »

I've been testing against external attacks. No meeting as blocking DNS attack.

The following link shows that vulnerable ENDIAN

http://openresolver.com/
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christophel77
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« Reply #1 on: Tuesday 10 November 2015, 09:23:46 pm »

Hi

try this command

iptables -A INPUT -p udp --dport 53 -m u32 --u32 "0x28=0x0000ff00"

iptables -A INPUT -p udp --dport 53 -m u32 --u32 "0x28=0x03697363 && 0x2c=0x036f7267"

iptables -A INPUT -p udp --dport 53 -m u32 --u32 "0x28=0x02646b00"




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mmiat
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« Reply #2 on: Tuesday 10 November 2015, 11:10:03 pm »

sorry but I've not understood
if I check an ip from a network that uses Endian and it detects vulnerability, this means that my endian is vilnerable?
thanks
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Timmeh
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« Reply #3 on: Sunday 22 November 2015, 12:58:04 am »

i think this test only check if the dns server allows recursive queries and therefore enabling dns amplification...

not vunerable just open to abuse
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