how to avoid ddos

DDoS (Distributed denial of service) attack is a simple and fatal network attack using TCP/IP protocol vulnerability, because the TCP/IP protocol is unable to modify the session mechanism, so it lacks a direct and effective defense method. A large number of examples prove that the use of traditional equipment passive defense is basically futile, and the existing firewall equipment will be paralyzed due to limited processing capacity, become a network

1. Common DDos attack types SYN Flood: it is currently the most popular DoS (DoS attacks) and is a type of TCP connection request that uses TCP protocol defects to send a large number of forged TCP connection requests, so that the attacked party's resources are exhausted (the CPU is full or the memory is insufficient. Smurf: This attack sends a packet with a specific request (such as an ICMP Response Request) to a subnet broadcast address, and disguis

To go to the bank to do business examples:Network layer DDoS is to let the road to the bank become congested, unable to get the people who really want to go to the bank, often use the protocol as a network layer, such as TCP (using three handshake response to wait and limit the number of computer TCP connections), etc.The application layer DDoS is to consume the bank's business resources, such as using HTTP

The internet is rich and colorful, basically able to find the resources we need, but also because so many friends are joined to the ranks of the webmaster. Among the many stationmaster also can exist infighting thing. In particular, our personal webmaster, due to limited technical and financial resources, very easy to use on the host, VPS after the attack did not have the ability to defend, leading to our host or VPS to our account suspension, IP hangs and so on. In particular, we are using the

1, Baidu search 360php-ddos script Kill tool we enter to 360 official to download this toolkit. 2, download the Good toolkit after we upload the 360doskill.php to your site root directory. 3, then we directly in the browser to access 360doskill.php, access to address: http://site domain name/360doskill.php 4, then we enter the default username and password login. 5, then we click on the scan can scan the entire directory, of course, you can al

1. Overview With the development of information technology, various network security problems are emerging. Although WLAN has the advantages of easy to expand, flexible to use and economical, it is particularly vulnerable to the security aspect because of its use of RF working mode. The wireless network based on ieee802.1l has been widely used, but it has also become an attractive target. Due to the serious defects of IEEE802.11 's WEP encryption mechanism and authentication protocol, a series

of an attack is only a single IP address, attempting to change the IP address and change its DNSmapping may be the fastest and most effective way to avoid the attack. However, the purpose of the attack is to make normal users unable to use the service. Although the IP address change method avoids the attack, the hacker has also achieved his goal from another perspective. In addition, if the attack method is simple and the rule can be identified by th

ipsec static add filterlist name= deny list REM add filter to IP filter list (allow Internet access) netsh ipsec static add filter filterlist= allow List srcaddr=me dstaddr=any description=dns access protocol=udp mirrored=yes dstport= 53 REM add filter to IP filter list (no one else to access) netsh ipsec static add filter filterlist= deny list Srcaddr=any dstaddr=me description= others to me any access protocol=udp Mirrored=yes REM Add filter action netsh ipsec static add filteraction name= ca

scalable, ensuring that it can be used on demand during a DDoS attack, especially if the system is running simultaneously in multiple geographic regions. Any virtual machine instances running in the cloud need to ensure that network resources are available.Microsoft provides domain Name System (DNS) and Network Load Balancing for all Azure, and Rackspace provides exclusive cloud load balancing to control traffic flow. In combination with CDN system,

, JavaScript DDoS can take advantage of any Web browser-installed host to participate in the attack, in other words, its potential attack capacity is infinite.In this article, we'll be combing JavaScript DDoS with you from both "attack" and "defense": Attack: How an attacker can implement a DDoS attack by means of a malicious address, a server hijacking,

can not normally use the service. For example, hackers try to use a large number of packets to attack the general bandwidth of a relatively small number of dial-up or ADSL users, the victim will find that he is not connected to the site or the response is very slow. DoS attacks are not an intrusion into the host nor can steal information on the machine, but the same will cause damage to the target, if the target is an E-commerce site will cause customers can not go to the site shopping. Third