Three machines are shared, and one machine needs to be not connected to the Internet, and the other

Do you want to ask the landlord if he is using a router to share?

If yes, then it's much simpler Router has MAC filtering, just turn on the router firewall (usually in the security settings), and then turn on MAC address filtering Select Allow MAC addresses in the list to access the Internet

Then in the MAC address filter fill in the MAC of the computer that allows access to the Internet. Save it.

mac get start run hit cmd and then in dos window hit ipconfig all enter.

The 00-60-08-3d-cd-** is the MAC address.

If you use the sharing of one of the computers to access the Internet with the XP system, you can't set permissions, you can only set the gateway for the one that doesn't go online, so as long as you set the gateway, it's easy to surf the Internet.

If you use ** software, such as proxy and the like, there are also corresponding permission settings.

You shut down and reboot because it's gone.

Specifying the IP that can access the Internet in the route can be realized.,Don't set the IP of the machine that doesn't let him access the Internet.,If you're afraid that he's stealing it, bind the MAC address.,That's it.。

Route filtering. Mac Filtering!

Add the MAC you need to access to the Internet to the route. The other one can be left unadded.

Just set up your router and you can do it. Block the MAC address of the machine that does not access the Internet at the WAN port of the router. The LAN port is the local area network, which does not affect the mutual access of several machines.

There are still many possibilities, 1. The router has a port, you can try to change the port that can be used. (The landlord is a smart person, I guess I have tried).

2. Router question 2: Router configuration, check the router configuration. Or initialize and reconfigure.

3. Network provider restrictions.

4. Check the network cable, there is a special line tester, which can check whether there is a problem with the network cable. (I believe that the network cable is fine, because the landlord said that it has changed a few).

5. Computer problem is a network card, change a network card that can be used.

6. Computer problem 2 LSP, repair system LSP, many system maintenance tools are available, such as 360 security guard has an initialization function.

7. Computer problem three drivers, uninstall the network card driver, and then restart to let the system automatically install the network card driver. (Lower version systems are not valid, and excessive systems are also invalid).

8. Computer problem four firewalls, turn off the firewall, or turn off the restrictions of the firewall on network connection.

1.NIC driver.

2.LAN IP settings.

3.Network protocol: IPX IP

4.The router restricts the network connection of a certain unit.

Someone else is blocking you from surfing the internet for fast speeds...

ARP spoofing should be used!! You go to someone else's computer and see if someone has installed a cyber enforcement officer.

This may be the port set up on the part where you install the network cable (such as telecom), which is really difficult to get right.

Reinstall this computer.

Step 2: Right-click My Computer on the desktop of the computer you want to share, select Manage, double-click Local Users and Groups, find the user, double-click Guest, and remove the check box in front of "Account Deactivated". And the guest password is set to empty.

Step 3: Click Start, Run, Enter in the lower left corner of the computer host to be shared, enter the local policy, find the user rights assignment, and delete all users in "Deny access to this computer from the network" on the right side.

Step 4: For the host computer that needs to be shared, find the security option in the local policy, change the "Sharing and security mode of local accounts" to "Guest only" on the right side, and set "Account: Local accounts with blank passwords are only allowed to access the console" to "Disabled".

Step 5: In the host computer that needs to be shared, go to Printer & Fax, right-click to select the printer, select Printer Properties, and select Share this printer.

Step 6: In the computer of the local area network, enter the "Internet Neighbor", find the computer name of the printer host, double-click to enter, you can see the shared printer, double-click the printer, click to connect.

** line can only be used for one account to access the Internet at the same time, whether you are adsl or ** dial-up, never allow two dial-ups at the same time, this is the operator's limit to death, no one can change it.

Depending on your requirements, there can be two solutions:

1. Open the dial-up connection at the same time, use the same account password, and then shout the password "Dial at the same time (note to be at the same time), and then the two can go online at the same time."

2. Two computers are connected to the switch, or one of them uses a dual network card, to form a local area network, through the LAN sharing Internet software to share the Internet, there is a software that can be installed together, which one can be dialed up first as a server, so that you can avoid the situation that the server has to be turned on all the time to get on the other one, this program forgot, you find it yourself.