Why is my computer constantly under attack by the shockwave of IP from outside?

Update to sp2, or hit the blaster patch.

Reason analysis: Each machine in a LAN can only have a unique IP address, after we turn on the DHCP function of the router, the router will automatically assign an IP to each computer mobile phone tablet that joins the LAN.

If someone's mobile phone and computer manually set the IP, and it happens to be the same as the IP assigned by the router, there will be an IP address conflict.

The method of manually adding an IP address ---xp:

Right-click on Sakura's network spoiler and select Properties.

Right-click on the local connection and select Properties.

Double-click Internet Protocol.

Check the box to use the IP address below.

The router address cannot be taken to the first or last digit (such as or, or and to take the router login address (most of the stools are).

DNS can also be set in the next step.

You do not need to set DNS, if it is a public IP address, you need to set DNS.

Attach the setting method: win+r to open the running window >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> Fill it in the above window (optionally omitted).

Question 2: It should be poisoned, the ARP you mentioned should be this way to cause IP conflicts, it is recommended to install the ARP firewall in Jianliyan.

IP conflicts are also relatively common, so let's first understand the IP

An IP address must be unique within a network, i.e., an IP address is unique. For example, in a local area network, this IP is only used on one computer, and if there are two or more computers using this IP, there will be conflicts.

I'm glasses, I'm sorry, add some anti-theft words, please forgive me)

Now that we have a basic understanding of the causes of IP conflicts, let's take a look at the situations under which they occur?

There are two types of IP addresses.

1. Automatic acquisition, when the server or router in the network turns on DHCP (dynamic host configuration protocol, this protocol will define the address pool that automatically assigns IP, for example, then, the client in the network can be set to automatically obtain the IP address in the local connection to let the server configure an IP for the client, this IP is random (the server or router selects a non-assigned address pool from the defined address pool to use), This makes it possible to guarantee that the IP address is not the same as that of other computers that use automatic IP acquisition.

I'm glasses, I'm sorry, add some anti-theft words, please forgive me)

2. Manual designation, when the server or router in the network does not have the DHCP function turned on, we have to configure the IP for the client by ourselves, of course, if the server has the DHCP function turned on, we can also manually specify.

I'm glasses, I'm sorry, add some anti-theft words, please forgive me)

Okay, then let's see what happens.

If your computer uses automatic IP, for example, you have already got one, and then, another user in the same LAN as you, he is not automatic, he manually sets the IP, and he doesn't know that you have used this IP, he also configures his own computer, so that there are two identical IPs in the network, which breaks the IP uniqueness, and the conflict arises.

Or, yours is also manual, and then he manually configures an IP that is the same as yours, and that is the same result, IP conflict.

I'm glasses, I'm sorry, add some anti-theft words, please forgive me)

Finally, let's talk about the solution.

1. If you are using automatic and there is a conflict, you can click on the fix and let the server reconfigure a new IP for you.

2. If you are manual and the server has DHCP turned on, you can change it to automatic.

3. If you are manual and the server does not open DHCP, you can manually change it to another weird IP, for example.