Previous Article: http://www.bkjia.com/Article/201110/109182.htmlInstallation Method:1. Download the compressed package in the attachment, decompress it, and copy mod_dosevasive22.dll to the modules directory under the Apache installation directory (of course, it can also be another directory and you need to modify the path yourself ).2. Modify the Apache configuration file http. conf.Add the following contentLoadModule dosevasive22_module modules/mod_dosevasive22.dllDOSHashTableSize 3097DOSPage
Anti-DDoS, complete registry settings
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE/system/CurrentControlSet/services/TCPIP/parameters]
Disable the invalid gateway check. When the server is configured with multiple gateways, the system will try to connect when the network is not smooth.The second gateway can optimize the network by disabling it.EnableDeadGWDetect = DWORD: 00000000.
Disable res
ZOJ 3868 (Anti-DDoS principle + fast power), zoj3868
GCD Expectation
Time Limit: 4 Seconds Memory Limit: 262144 KB
Edward has a setNIntegers {A1,A2 ,...,AN}. He randomly picks a nonempty subset {X1,X2 ,...,XM} (Each nonempty subset has equal probability to be picked), and wowould like to know the expectation [Gcd(X1,X2 ,...,XM)]K.
Note thatGcd(X1,X2 ,...,XM) Is the greatest common divisor {X1,X2
Tags: bzoj, bzoj3589, principle of tree link partitioning and rejection
Given a 1-Root tree, each node has a certain privilege and provides two operations:
1. All node weights of the subtree with a node as the root + x
2. Obtain the vertices and consortium of some links. These links are directed to the root node from a node.
First, modify the sub-tree, query the link, and split the wt ~
Then, the point permissions of each vertex on these links can only be added once, and cannot be marked. Due to
security, you can set the maximum connection, single IP connection, and blacklist!Maximum connections:7000-> 30000 (LoginGate) is set to 40 single IP connection is set to: 207100-> 31000 (SelChrGate) is set to 30 single IP connection is set to: 207200-> 32000 (RunGate) is set to 1000 Single IP connection is set to: 20In this way, we can effectively prevent DDOS attacks or other variant attacks!Defends against SYN attacks!You can set an IP address seg
Several anti-DDoS Methods
1) Use the findwindow API function.You can query the window title (or/and Class Name) to determine whether the program is running. If it is found, it indicates that the program is running, and you can exit the program to achieve the effect of not repeating the operation; otherwise, it indicates that the program is running for the first time.This method is not applicable to situati
Anti-DDoS: CC attack defense system deployment1. System effect this DDOS Application Layer defense system has been deployed on the http://www.yfdc.org site (if access fails, please directly access the server in China http: // 121.42.45.55 for online testing ). The defense system is at the application layer, which effectively prevents the abuse of server resources
Amazon anti-DDoS: Remove device encryption in the latest Fire Tablet System
Just as Apple and the FBI are in a fierce battle for device encryption, another tech giant, Amazon, has reversed its path and removed the device encryption feature from the latest Fire Tablet system.User: Why can't I find the encryption function?
Recently, many users have found that the encryption function cannot be found after
downlink PC or hub. do not enable this function at the uplink port of the access switch.
Rujijie (config-if-range) # rldp port loop-detect shutdown-port ------> the interface enables the rldp function. If the port is showdow after the loop is detected
Rujijie (config-if-range) # exit
Rujijie (config) # errdisable recovery interval 300 ------> If the port is detected and shut down by rldp, it will be restored automatically in 300 seconds and re-detect whether a loop exists
Rujijie (config) # End
Anti-DDoS program module indirectly transmits STL instance objects through struct
We often pass parameters to functions through struct. In principle, the struct should not contain non-pod members.
[Reference]========================================================== ==========================================Pod, short for plain old data, a common old data structure (POD) is a data structure. It is used only
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