ddos attack ip address

Distributed denial of attack (DDOS) software tfn2k attack and defense First of all, the purpose of my writing this article is not what I want to be hacker and so on, and I do not encourage anyone to use it to do something detrimental to others, I just want one more Some people pay attention to network security, together research and defense of DOS. Because I wa

will not allow him to access it. It is regarded as a Refresh, and a time parameter can be added to allow access for how long, in this way, access to time-consuming pages is restricted, which has almost no impact on normal customers.3. the HTTP_X_FORWARDED_FOR variable sent by the proxy is used to determine the real IP address of the machine attacked by the proxy. This can be used to find the attacker. Of c

by a DDoS attack. Hackers use all computers in the network to attack victims, instead of occupying these spoofed hosts in advance. This is a Smurf attack. DRDoS attacks are based on this principle. Hackers also use a special packet sending tool to first send SYN connection request packets that have forged the source

1k, the resources occupied by this time is purely bandwidth resources, even if the system does not solve the problem of limitations, But it doesn't matter, for the problem of the network layer, we can make restrictions on the network layer, we only need on the network to reach our IP of all the non-TCP packets such as UDP and ICMP protocols are prohibited, but we do not have their own servers and lack of control over network equipment, At present, by

communication is 1: 73, and the data volume ratio is 234 bytes: 73 × 482 bytes, which is approximately equal to 1: 562. The calculation result is as follows: MB of attack traffic can be obtained for 10 MB of communication traffic, that is, 5 GB of attack traffic. It is precisely because of this command's non-equivalent exchange (1: 562 of Compensation), UDP Communication ambiguity (no three-way handshake v

In linux, the most common way to defend against ddos attacks is to install DDoS deflate to prevent or mitigate ddos attacks. However, there are other methods to use. I will introduce them below. Introduction to DDoS deflate DDoS deflate is a free script for defending against

when the attack, the request of not this list is discarded, greatly reducing the performance pressure. For domain names, implement the same domain name white list mechanism, the non-white list of domain name resolution requests, do discard processing. 1.5. Slow connection Attack DefenseSlowloris attack defense is relatively simple, the main program has two. The

Figure Iii. DDOS attack methods 3.1 SYN Flood Attack SYN-Flood attacks are the most common DDoS attacks on the current network and the most classic denial-of-service attacks. They use a defect in TCP implementation, by sending a large number of a