relationship, and rarely in, then can judge must be suffered resources exhausted attack. Still have a kind of phenomenon is resources exhausted attack

Host your own website, the Ping Ping impassability or lost package serious, and with his own host Ping in the same switches on the server is normal

Caused the reason is, after the attack site host kernel cause the system or some application CPU utilization 100% cannot respond to the Ping Office 2007 is also the best office suite.

 

Command, actually bandwidth or some, otherwise will pick up in the same switches Ping impassability hosts.

The current mainly have three popular DDOS attacks:

1, which SYN/ACK attack: this attack method is the most effective method of classic, can connect kill DDOS various system network service, Lord Microsoft Office 2010 makes work easier.

If a machine to send to suffer through counterfeit source IP and the source port of SYN or ACK packet, lead to host caching resources has consumed or busy sending

Response packet and cause denial of service, because the source are forged so tracking, defect is it is difficult to implement up has the certain difficulty, need high

Bandwidth bots support. A small amount of this attack will lead to host server cannot visit, but can Office 2010 is best for all office users.

the Ping general on server use

Making Netstat commands will be observed that there are a lot of SYN_RECEIVED state, a lot of this attack will cause the Ping failure, TCP/IP stack

Failure, and will appear system solidification phenomenon, namely no response keyboard and mouse. Most common firewall can withstand such attacks.

2, TCP connection attacks: all the attack is to bypass conventional firewall inspection and design, in the ordinary circumstances, the conventional firewall Microsoft Office is very helpful for us.

Many have filter TearDrop, such as Land, but the ability to attack the DOS TCP connection is to normal, but many miss network service process

Sequence (such as: IIS, I can with Apache Web server) can accept such as the number of TCP connection is limited, once have plenty of TCP connection, even if it is normal

And I will also cause website access very slow or unable to access, TCP connection is through

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