best attack method for ddos

Note: Depending on the number of web logs or network connections, monitor the number of concurrent connections for an IP or PV to 100 in a short timethat is, call the firewall command to seal off the corresponding IP, monitoring frequency every 3 minutesthe firewall command is: iptables-a input-s 10.0.1.10-j DROPIdeas:1. Analyze logs, extract IP and PV numbers2.while statement, read the extracted IP and PV number, and implement a 3-minute loop3. Call the firewall commandUse while to read the log

Today in order to rest, change the brain, so I found a previous collection of Python article, is about DDoS attack a script, just today is free, on the practice. Attached source pyddos.py: #!/usr/bin/env Python import socket import time import threading #Pressure Test,ddos Tool #---------------------------MAX _conn=20000 port=80 host= "www.baidu.com" page= "/ind

Brief description: SMS ddos Attack Vulnerability in Shanda online Detailed description: Shanda online will send a verification code to the mobile phone when the password is forgotten. URL: Http://pwd.sdo.com/ptinfo/safecenter/getpwd/ChgPwdStepOldPwd.aspx? Showbindmobile = 1 Mobile phone numbers can be controlled at will, and sms ddos attacks can be carried out wi

Site was DDoS attack, so wrote a foot to resist, to achieve the way: 1. Attack characteristics, different IP constantly post Web page, resulting in excessive resource consumption2. Analyze Nginx Access log, Judge post feature to obtain Client access IP3. Attack IP block with a connection number greater than 504. Recor

Introduction: On the network, the Linux server is a great way, but also the attack. This article will describe the NTP attack problem encountered in practice and the corresponding solution. 1. Scene description Aliyun on the ECS, over a period of time, frequent alarm, said the traffic is too large, the DDoS attack, the

PHP code malicious DDoS attack before I was touched once, the server resources are accounted for, so that the site can not be used properly, let me introduce the solution. Solutions Modify the php.ini file The code is as follows Copy Code "Disable_functions" changed to Gzinflate, the default is to vent"Allow_url_fopen" set to OffPhp_sockets.dll, open this module. The abo

Anti-DDoS script # Lightweight prevention against SYN AttacksIptables-N syn-floodIptables-A input-p tcp-syn-J syn-floodIptables-I syn-flood-P TCP-m limit-limit 3/s-limit-burst 6-J returnIptables-a syn-flood-J reject # Prevent too many Dos connections. You can allow up to 15 Initial connections from each IP address of the Internet Nic, exceeding the limit of discardingIptables-A input-I eth0-P TCP-syn-M connlimit-abve 15-J DropIptables-A input-p tcp-M

Log on to your server with the root user to execute the following command, using it you can check whether your server is in a DDoS attack or not:NETSTAT-ANP |grep ' tcp\|udp ' |awk ' {print $} ' |Cut-d:-f1 |Sort |uniq-c | Sort–nThis command displays a list of the maximum number of IPs that are logged on that are connected to the server.DDoS becomes more complex, as attackers use fewer connections, more IP-a

DDoS (Distributed Denial of Service) has made another huge step forward in DOS development, this Distributed Denial-of-Service attack allows hackers to use different high-bandwidth hosts (hundreds or even thousands of hosts) that have been intruded and controlled) install a large number of DOS service programs on them, waiting for commands from the central attack

TCP connection: 1 Webuià high-grade equipment à group, set up a team "all" (can be customized title), including the entire network segment of all IP address (192.168.0.1--192.168.0.254). Attention: Here the user LAN segment is 192.168.0.0/24, the user should be based on the actual use of IP address segment for group IP address segment designation. 2) Webuià high-grade equipment à transaction for the strategic equipment, set up a strategic "pemit" (can be customized title), the "all working G

-refresh times$uri = $_server['Request_uri']; $checkip=MD5 ($IP); $checkuri=MD5 ($uri); $yesno=true; $ipdate=@file ($file);foreach($ipdate as$k =$v) {$iptem= substr ($v,0, +); $uritem= substr ($v, +, +); $timetem= substr ($v, -,Ten); $numtem= substr ($v, About); if($time-$timetem $allowTime) { if($iptem! = $checkip) $str. =$v; Else{$yesno=false; if($uritem! = $checkuri) $str. = $iptem. $checkuri. $time."1";ElseIf ($numtem 1) .""; Else { if(!file_exists ($fileforb

Enable NGINX anti-CC and DDOS Attack ModuleHttpLimitZoneModule configuration instructions This module makes it possible to limit the number of simultaneous connections for the assigned session or as a special case, from one address. Example configuration Http {limit_zone one $ binary_remote_addr 10 m; server {location/download/{limit_conn one 1 ;}}} HttpLimitReqModule configuration instructions This mo

The PHP anti-DDoS attack instance code is as follows:

times to $uri=$_server[' Request_uri ']; + $checkip=MD5($ip); - $checkuri=MD5($uri); the $yesno=true; * $ipdate[Email protected]file($file); $ foreach($ipdate as $k=$v)Panax Notoginseng{$iptem=substr($v, 0,32); - $uritem=substr($v, 32,32); the $timetem=substr($v, 64,10); + $numtem=substr($v, 74); A if($time-$timetem$allowTime){ the if($iptem!=$checkip)$str.=$v; + Else{ - $yesno=false; $ if($uritem!=$checkuri)$str.=$iptem.$checkuri.$time."

Php ddos attack and prevention code $ Ip = $ _ SERVER ['remote _ ADDR ']; ?> PHP DoS, Coded by EXE Your IP: (Don't DoS yourself nub) File: function. php

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#!/bin/sh#date:2015-12-13#filename:fang-dos.sh #version: v1.0while truedo #awk ' {print $} ' Access_2015-12-15.log|grep-v "^$" |sort|uniq-c >/tmp/tmp.log netstat-an|grep est|awk-f ' [:]+ ' { Print $6} ' |sort|uniq-c >/tmp/tmp.log exec For more information, please visit Li Hing Lee BlogShell anti-DDoS attack principle

The CC attack (Challenge Collapsar) is a DDoS (distributed denial of service) and is a common site attack method, the attacker through the proxy server or broiler to the victim host constantly send a large number of packets, causing the other server resources exhausted, until the crash.The CC

PHP uses the hash conflict vulnerability to analyze DDoS attacks. Analysis of PHP's method of using the hash conflict vulnerability for DDoS attacks this article mainly introduces PHP's method of using the hash conflict vulnerability for DDoS attacks, instance Analysis: php

Analysis of PHP's method of using the hash conflict vulnerability for DDoS attacks This article mainly introduces how PHP uses the hash conflict vulnerability for DDoS attacks. The example analyzes the principles and implementation skills of php using hash for DDoS attacks. For more information, see This document des