flagflag  
  
1: 2015-06-03 (Wed) 22:37:23 iseki source Cur: 2015-06-03 (Wed) 22:40:53 iseki source
Line 1: Line 1:
** Bind [#oc081faa] ** Bind [#oc081faa]
*** vs DDOS アタック [#q4aa3812] *** vs DDOS アタック [#q4aa3812]
-- iptable で denied の返答を返さないようにする. +- iptables で denied の返答を返さないようにする. 
--- -A OUTPUT -p udp -m udp --sport 53 -m u32 --u32 "0>>22&0x3C@8&0x0F=5" -j DROP+-- 5=REFUSED のレスポンスを DROPする 
 +-- /etc/sysconfig/iptables 
 +--- -A OUTPUT -p udp -m udp --sport 53 -m u32 --u32 "0>>22&0x3C@8&0x0F=5" -j DROP
#br #br
  


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