If you are seeing queries for this domain, than you are likely participating in DNS Amplification attacks and your DNS server is probably reachable from the internet and has recursion enabled.
If you are seeing responses for this domain.. unlucky. You are currently beeing DDOS-ed! Good luck.
IPtables:
There are two iptable rules available. If your distribution supports Iptables 'u32' module pick this one, otherwise use the 'string' rule.
U32:
iptables --insert INPUT -p udp --dport 53 -m u32 --u32 "0x28&0xFFDFDFDF=0x08464b46 && 0x2c&0xDFDFDFDF=0x4b464b46 && 0x30&0xDFFFDFDF=0x4102434f && 0x34&0xFFDFDFFF=0x02554b00" -j DROP -m comment --comment "DROP DNS Q fkfkfkfa.co.uk"
More U32 rules can be found here:
https://github.com/smurfmonitor/dns-iptables-rules/blob/master/domain-blacklist.txt
String:
iptables --insert INPUT -p udp --dport 53 -m string --from 40 --to 56 --algo bm --hex-string '|08666b666b666b666102636f02756b00|' -j DROP -m comment --comment "DROP DNS Q fkfkfkfa.co.uk"
More Iptables rules for the STRING module can be found here:
https://github.com/smurfmonitor/dns-iptables-rules/blob/master/domain-blacklist-string.txt
Source:
94.102.49.241
Name server:
;; ANSWER SECTION:
fkfkfkfa.co.uk. 21600 IN NS ns1.fkfkfkfa.co.uk.
fkfkfkfa.co.uk. 21600 IN NS ns2.fkfkfkfa.co.uk.
Response:
A 243
NS 2
SOA 1
Rsize 3976
Whois
Domain name:
fkfkfkfa.co.uk
Registrant:
PakGaming
Registrant type:
Non-UK Corporation
Registrant's address:
Lyari City, House No # 203
Karachi
Sindh
74552
Pakistan
Registrar:
eNom, Inc. [Tag = ENOM]
URL: http://www.enom.com
Relevant dates:
Registered on: 15-Jan-2014
Expiry date: 15-Jan-2015
Last updated: 15-Jan-2014
Registration status:
Registered until expiry date.
Name servers:
ns1.fkfkfkfa.co.uk 50.2.65.18
ns2.fkfkfkfa.co.uk 50.2.65.18
WHOIS lookup made at 23:24:12 17-Jan-2014
--
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Copyright Nominet UK 1996 - 2014.
You may not access the .uk WHOIS or use any data from it except as permitted
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register. Access may be withdrawn or restricted at any time.
Please see the domain fkfkfkfb.org... :)
ReplyDeleteIs the same ns for fkfkfkfa.co.uk/fkfkfkfa.com (50.2.65.18)