ARP in the Internet caf .,A few machines can t get on the Internet.,Ask the master to solve it.。。

Monitor which machine in the LAN keeps sending data out for a continuous period of time, usually the poisoned machine, and the others are puppets.

Generally, ARP attacks are characterized by the fact that the infected machine can access the Internet normally, but other machines in the same network segment cannot access the Internet normally.

Solution: 1 Replace the LAN switch with a device that can isolate Layer 2 broadcasting, and enable port isolation for each user port, so as to avoid the poisoning machine from interfering with other machines to access the Internet, the disadvantage is that some protocols in the LAN can not work, such as not sharing files with each other, sharing printers, etc.

2 Use the arp -a command to query the ARP cache information of the local machine, if the MAC address of the gateway is incorrect, it means that the MAC is the MAC of the poisoned machine, find the machine, and kill it. But now that there are new variants, and the Mac is also fake, this method can't solve it.

3 Your own machine is also poisoned by arp, so you can go online, quack...

It's simple, install an ARP firewall, and it's easy to get done.

If it is an ARP attack, it cannot be solved by software alone, and many people think that ARP firewall will do. Isn't this the same as shutting down your computer for a year and starving the virus to death? There is no way to solve it, ARP is a normal protocol attack launched from the bottom by exploiting the inherent vulnerabilities of the Ethernet protocol, and the only way to solve it is to intercept ...... from the network cardUpgrade the immune network, genetically bound terminal network card, strictly control and audit the identity, strictly verify the packet of any data sent, ensure your network security and stability, and directly intercept malicious protocol data from the terminal network card....

Hello friend, you are several families use one network, that is, the router is used to access the Internet. They can attack your computer and control your internet speed. All you have to do is turn on 360 Guard. will stop ARP attacks. I hope my answer is helpful to you.

It's better for you to install a software to prevent ARP attacks, you try the ARP firewall in the 360 Security Guard Trojan Firewall, this is turned off by default, you turn it on, this still works.

Install a Comodo Firewall. I think it's pretty good.

Just go to the Internet and find an ARP firewall.

Very practical. That's what we're doing in our Internet café.

Installing an ARP firewall works very well.

The machines in the Internet café have hardware restoration or software restoration, even if the ARP virus is hit, as long as the machine is restarted, it can be restored to a non-toxic state.

Anonymous 5-21 10:01

Other answers. 1. The network used by the Internet café is a dedicated line, and the cost of optical broadband is several thousand a month, and the stability must be good.

2. Regular Internet cafes all use management software, and the software has a drive firewall and restore function, so as to eliminate internal virus Trojans. At the same time, the routers and main switches used are also set up with corresponding security specifications, and there are basically no or very few virus and Trojan attacks.

Hundreds of years and contemporary, good times, thousands of years, new and new, Vientiane renewed.

It must be someone who has a professional network manager.

Not all webmasters eat dry food.

No? It's just that you didn't find out! In fact, the battle against hackers is very powerful!

There is a network manager who maintains the computer host, of course not.