There is often no Internet access in the LAN, why is the LAN not available?

I used to have many similar experiences when renting a house in Beijing, most of them used P2P attack software to cause ARP spoofing, such as: network judges, P2P terminators; The solution is to run cmd first, first use ipconfig to check your IP and physical address, and then use the arp command to bind this method is indeed available, but I generally want to be convenient ** gadget, quite effective, no matter how they deceive it is useless, but the premise is to run the software before the other party has no conflict, the software name is anti arp sniffer; Or you can install a firewall Skynet to see whose IP goes directly to him; The technology is updated relatively quickly, and there may be newer defense methods now, please check the landlord on the Internet, good luck!

Truth be told, it's not the time for telecom to just start promoting broadband, and it's not unrelated to their troublemakers.

If you're a regular user, people may not be able to stand it, so they ban you with P2P.

You can try anti-P2P software.

But if you say you're connected to a switch, then P2P should be useless to you.

Then it may be a problem with the cat or the switch, and it can be solved by a power outage.

The question is too general, what is the hint to be famous, is it a hint that the cable is not plugged in properly?

Or have you never been able to connect? Or something else?

If the cable isn't plugged in, you'll have to go to the guy and he'll take your line.

In addition to this, it is only a matter of whether your own computer is left, whether the IP settings are correct, whether the gateway settings are correct, you must be sure.

Inside a building. Is it Netcom's network?

If it is a Netcom network, it is possible that this state may occur.

First of all, you have to determine whether everyone in a building is vulnerable to disconnection or is it only you.

If only you were disconnected. Very easy to handle. If not, you can only call the network company to detect it, and you can't handle it yourself! ～

Because someone has fallen for the ARP spoofing virus. A computer with poison will deceive other hosts on the intranet or intercept the data of other hosts, so the network will be disconnected.

What are the specific tips for not going online?

Is it intermittent?? And I've got a lot of problems with telecommunications, I guess, and I'm used to it

You ping the router and see if you can ping it.

You can check the properties dialog of your local connection to see if the relevant protocol is closed, and then select Notify me in the subregion after connection!

Is it a local area network? It is estimated that a computer is sending ARP spoofing packets.

Fix the problem that Windows XP cannot communicate with each other.

Many users have complained that computers with Windows XP installed on the LAN cannot communicate with computers with Windows 98 installed, and computers with Windows XP installed cannot communicate with each other. I have seen many tricks provided by masters, which can be summarized in the following 4 points: first, open a guest account; The second is to install the netbeui protocol; The third is to check whether the guest account is disabled in the local security policy settings; Fourth, set up a shared folder.

However, even if these four points are achieved, sometimes it still can't solve the problem of Windows XP's mutual access. Because in Windows XP, if you want to achieve mutual access, you need to set up this step:

On the Windows desktop, right-click on "My Computer", select "Properties", and then click the "Computer Name" tab to see if your LAN workgroup name appears in the tab, such as "TL2000", etc. Then click the Network ID button to start the Network Identity Wizard: click Next, select This machine is part of a commercial network, use it to connect to other working computers; Click Next, select Company uses a network without a domain; Click the Next button, then enter the team name for your local area network, such as "TL2000", click the "Next" button again, and finally click the "Finish" button to complete the setup.

Once the computer is restarted, the computers within the LAN can access each other.

I think I've set up my computer to hide from the LAN.

I used to set it up with TuneUp 2008.

Later, I was too lazy to do it.

Others can access the Internet, which means that the external network is connected to the intranet, check whether your IP is set correctly.

I don't understand what it looks like to disconnect from the Internet and reconnect to it, whether you can connect but you can't access the Internet or whatever.