Instructions for using Apache (HTTPD) server anti-DDoS module mod_evasive1, Mod_evasive Introduction;Mod_evasive is a DDoS-resistant module for Apache (httpd) servers. For Web servers, it is now a good extension to protect against DDoS attacks. Although it is not completely defensive against
Next we have a detailed understanding of the DDoS attack protection capability and its settings:
The user can turn on/off the DDoS firewall function by clicking the "turned on"/"Closed" button at the top right of the action interface. It is recommended that users install the server security dog and immediately turn on the
In the event of a server encounter, DDoS (Distributeddenialofservice, distributed denial of service) attack is a very good hacker behavior, it can make a large server cluster can also be a quick access failure. With the increase of Internet network bandwidth and the continuous release of multiple DDoS hacker tools,
DDoS attacks are now widespread, using the following methods servers can withstand a certain limit of DDoS.
1. Modify the registry. By modifying the registry, the system can withstand a certain amount of DDoS attacks. Modify the following values under [Hklm\system\currentcontrolset\service\tcpip\parameters]: SynAttackProtect REG_DWORD 2; EnablePMTUDiscovery REG_
The Windows system itself has many mechanisms that can be used to improve performance and security, many of which can be used to cope with high concurrent requests and DDoS attacks.
Windows Server performance can be improved with the following configurations:
First, to respond to high concurrent requests:
1, TCP connection delay wait time TcpTimedWaitDelay:
This is the time that must elapse before TCP/I
In recent days the company's official website and Business System registration page frequently encountered DDoS attacks, resulting in the IIS application pool CPU occupancy rate of 100%, access to the site 503 errors. The following is a summary of the response measures.
First, enable the CPU monitoring features of IIS
For low frequency DDoS, this approach can be taken. W3wp.exe is an application pool-rela
The server collects two types of script code for ddos attacks. One is the linux shell Command, and the other is the support for php code in any environment. I will post the source code below, for more information, see.
SHELL scripts for server defense against DDOS attacks
1. write scripts
Mkdir/root/bin
Vi/root/bin/dro
Comments: Distributed Denial of Service (DDoS) attacks are common and difficult to prevent by hackers. Distributed Denial of Service (DDoS) attacks are all called Distributed Denial of Service) it is an attack that hackers often use and cannot prevent. Its English name is Distributed Denial of Service 。DDoS is a network attack that uses reasonable service request
I. Symptom Analysis there are two main types of Internet access for website Server Operators: Host hosting and self-pulling network leased lines, most people use the former, but many Internet cafe owners use the latter. Whether connected by the former or the latter, users can normally access the website, browse the webpage, listen to music and watch movies online, or participate in Forum posts, assuming that line and hardware faults can be ruled out,
Major improvements of Tianying anti-DDOS firewall V1.78: protection against multiple SYN variants1. You can defend against Known DDOS, CC, DB, and legendary private servers without any configuration;2. The data analysis function is provided to defend against future attacks;3. Safe and efficient, with extremely low CPU usage;4. Remote connections are provided for ease of use;5. Defend against the latest SDDo
Eagle Anti-DDoS firewall V1.78 version major improvements: Increased number of SYN variant attack defense1. Without any configuration, can withstand the known ddos,cc,db, such as the attack of the legendary;2. With the data analysis function, can defend the future attack means;3. Safe and efficient, extremely low CPU usage;4. With remote connection, easy to use;5. Defense of the latest Sddos (super
Using PHP code to call sockets, directly with the server's network attack other IP, before I have encountered this problem in Apache, today we talk about the IIS to prevent the use of PHP DDoS network bandwidth and server resources processing methods.
Common code for PHP DDoS is as follows:
The code is as follows
Copy Code
$packets = 0;
Use PHP code to call sockets and directly use the server's network to attack other IP addresses. Previously I encountered this problem in apache, today we will talk about how to prevent php ddos attacks from occupying the network bandwidth and server resources in iis.
Common php ddos code is as follows:
The Code is as follows:
Copy code
$
How to check whether a Linux server is under DDOS Attack
Address: http://www.phpthinking.com/archives/427
Log on to your server and run the following command as the root user to check whether your server is under DDOS Attack:Netstat-anp | grep 'tcp \ | udp' | awk '{print $5}
How to configure Windows server to cope with high concurrency and DDOS attacksWindows systems have many mechanisms to improve performance and security, many of which can be used to cope with high-concurrency requests and DDOS attacks. The following configuration can be used to improve the performance of windows Servers: 1. Handle High-concurrency requests: 1. TCP
原文地址:http://www.phpthinking.com/archives/427 Log on to your server and execute the following command with the root user , using it you can check whether your server is in DDoS attack or not: netstat-anp |grep ' tcp\|udp ' | awk ' {print $} ' | Cut-d:-f1 | Sort | uniq-c | Sort–n This command will show that the logged on is the maximum number of IPs connected
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,
This article provides a detailed analysis of solutions for PHP programs to prevent ddos, dns, and cluster server attacks. For more information, see
This article provides a detailed analysis of solutions for PHP programs to prevent ddos, dns, and cluster server attacks. For more information, see
Speaking of nonsens
DDOS is crazy recently
The module mod_evasive in Apache that prevents DoS attacks. In lighttpd, mod_evasive can also be used to limit the number of concurrent connections to prevent DDOS attacks.In lighttpd. add the following code to the conf file to enable mod_evasive. This restriction is not enabled for downloading zip files, mp3 files, and other files. Otherwise, the website cannot be connected when the
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