Arp attack is an attack technology against Ethernet Address Resolution Protocol (ARP). A large number of data packets will be sent out, which will lead to the decline of the processing capacity of the router, which will lead to the slowdown of the network speed of the target computer or server, and it will be known that it is disconnected from the network and cannot access the Internet or access it. After ARP virus stops, the network will be restored.

Solution: First, determine whether you are poisoned, and use 360 security guards and other security software to disinfect the computer. If not, you need to take some precautions against the computer.

1. Install an ARP firewall for yourself or the server.

Install professional color shadow arp firewall or the arp firewall that comes with security software such as Baidu Guardian, Jinshan or 360 Guardian.

2. Bind ip and mac addresses to computers and gateways.

Take 360 as an example: Click the Trojan firewall-open the arp firewall, and then click the manual binding firewall in the LAN protection interface, which can greatly prevent the APR attack.

After clicking on it, there will be a question: are you a LAN user? The point is yes.

If the arp virus hadn't broken out at that time, everything I saw was good.

If it is already under attack, there will be a prompt. There are two choices in protection: automatic and manual, which are generally automatic. If it is automatic, you need to ask the administrator for the correct MAC code of the server and bind it manually.

This way, the user's computer will not be harassed by arp virus after it is set up. However, the fundamental problem has not been solved. It is still necessary to slowly find out the poisoned computer, otherwise it will still affect the overall network speed.