How do you get in touch with the limitations of the computer? The company s network cannot be connec

First, find the gateway to which the computer is connected; To see if the gateway is directly set on the firewall, you can use https: ip

Address access, if it is, you need to find a way to get the username and password on the firewall, Ruijie generally defaults to the username is admin, the password is firewall, if it is other models or not the initial password, you need to use some special tools or ways to obtain;

Second, if the computer's gateway is set on the router, you can log in to the router through telnet and modify the policy.

Third, if your gateway is a virtual gateway set up, you can also log in through telnet, ssh, etc., and the password and user name need to be obtained in a special way, and it is OK to modify the configuration of the export or the core configuration;

There are many ways to list, you need to figure it out yourself!

First of all: Are you sure your company's network is connected to the Internet?

Second: what does your company use (hardware and software) to manage the network?

Third: find out the solution in a targeted manner.

Have a good relationship with the network administrator, and you won't have to worry about the rest.

You have to use the emulator to open more, change the IP, this is very simple, prepare an emulator first, and then prepare an IP modification tool: for example, rabbit IP**.

For example, if I want to change 10 different IPs on a computer, directly on the emulator, using rabbits, you can modify it successfully, go and try it. Solve network lag.

This is not possible, generally this situation is that the company sets up a core router at the exit of the local area network, and then points the network application for office use to its internal address, and closes the outward access request, so the external network cannot be accessed from these network cables. If you are not afraid of being caught by the company, you can install a wireless network card, use mobile phone traffic as a hotspot, and you can surf the Internet, but you should pay attention to the use limit of traffic.

What you mean is that you're using an intranet café now.

It is very difficult to use both the external and intranet at the same time.

If you don't have to worry about it.

Just plug and unplug the network cables of the internal and external networks back and forth.

The premise is that you have a network cable from the external network.

The intranet and extranet do not function on the same network cable.

Need to switch back and forth.

It is generally set up in the router, and the specific method is different for each router.

I think a lot of people set it up manually.

It's not that complicated now.

Next.. Rabbit! sub@dynamic IP

A software that converts IP.

One-click IP change, especially convenient.

If the physical link is connected, if it is set to different network segments, you don't know which gateway it is, and you can't get out of the Internet without going through the gateway; If you go online through the router and other devices, he has set up only which IP addresses can be allowed, which can not be on, you can't get on the same, so it depends on how the network management personnel set up, it is best to know how to set up the IP address and gateway route, open their computer to see the network card settings in the control panel, if you can see the specified IP, gateway, DNS, just follow his settings, your IP to another IP address, but in the same network segment, if not, when they are not on, You directly specify their IP to see if you can get on it, because the management settings are different, you have to follow his settings to change to get on the Internet.

1. Enter Server Management in the ** bar of the browser, and enter it**.

2. Enter the ** and enter the account password to log in to the server.

3. After entering the Internet control bar, check Turn on Internet control, and click the Quick Settings option at the bottom of the page.

6. Select Time as All Time and click Next.

7. Click the end option to complete the setting.

1. Obtain the IP and MAC addresses of all users in the LAN.

How to get your own computer IP and Mac: win+r, enter cmd, use"ipconfig /all"View.

2. Log in to the broadband router.

Open IE, the input is generally this....), the login window will appear.

Account: admin

Password: admin (this is the default, generally do not change the drop....)If it's changed, I'll study how to crack it later, and post it when there is progress)

After logging in, the broadband router settings page will appear.

3. Only allow your own computer to access the Internet.

1.Settings page - DHCP server - static address assignment - bind your own IP address to your MAC address (enter and save it).

2.Settings page - Security Settings - Firewall Settings - Select Turn on Firewall, Turn on IP Address Filtering, Turn on MAC Address Filtering - Select"Packets that do not comply with the IP address filtering rules are prohibited from passing through the router"with"Only MAC addresses that are enabled in the MAC address list are allowed to access the Internet"。

3.Settings Page - Security Settings - IP Address Filtering - Add New Entries - Fill in your IP address and select Make All Entries Active.

4.Settings Page - Security Settings - MAC Address Filtering - Add New Entries - Fill in your MAC address and select Make All Entries Active.

After setting it up like this, hehe, no one can go to the external network except you, but the inside of the LAN can be accessed normally.

Fourth, do not allow a certain computer to access the Internet.

1.Settings page --Security Settings --Firewall Settings --

Select Enable Firewall and enable MAC address filtering"Disable enabled MAC addresses from the Enabled MAC address list from accessing the Internet"。

2.Settings page - Security Settings - MAC address filtering - Add new entry - Fill in the MAC address of the computer that is prohibited from surfing the Internet and select Make the entry effective.

After this setting, computers that are prohibited from accessing the Internet will not be able to access the Internet, but they can be accessed normally within the local area network. For settings that only allow one's own computer to access the Internet, it is more difficult for other computers to access the Internet (except for hacking into the router and changing the settings).

You look like a dumb router, right? Start learning the mac address of the computer, and then bind the IP address -- and then limit the IP address OK

Now a broadband router for home and small office can meet your requirements:

Enter the router configuration interface, in the access control (there are slight differences in the statements of various models of routers), add the MAC address of the machine you want to prohibit from surfing the Internet, save the configuration and restart the router - the MAC address is the physical address of the network card, run it on the computer, enter the DOS window, and use ipconfig all to see.

The route of the good point has this function, and the MAC address is bound to the point after the point has a prohibition of accessing the Internet

Use P2P software! It's easy to implement your requirements, and it's completely free and easy to use!

Which LAN workgroup do you want to enter,Or other you can find the option to join a workgroup or homegroup in the network properties,The above is basically a step-by-step operation because I don't know what system your system is,It is recommended that you take a screenshot of the attributes of the online neighbor (xp system) or network (win7 system)win7 is to select the homegroup and sharing options,Click in,Follow the prompts to operate xp,You have to take a screenshot for me to see,Otherwise, I don't know how to operate, Because my current computer is win7 system, you try it, I hope it will help you!

This depends on the network topology and scale, and there are generally the following reasons:

1. This is the most common problem, start from this reason when troubleshooting, the exit route or exit line failure;

2. If a host is directly connected to the egress route, you can go up and down to find the fault of the Layer 3 switch or the core layer device;

3. If the above two reasons are not packet capture, find out if there is an ARP attack.

Router, restore it should be possible, check and kill boot viruses.

Since the Mac is fine.

Then open IE settings. Change to automatically get an IP address Check it out.

Maybe.

It should be a matter of MAC address binding, you click a little MAC address binding in the router and restart the router should be fine.

It's usually a DNS setup issue. DNS is a service that converts domain names into IP addresses, and all kinds of behaviors you surf the Internet need to be carried out through IP, but we usually remember domain names, and if there is no correct DNS service, you can't access them by domain name.

Checking the DNS is also very simple, first enter the DOS window, and then hit the ipconfig all command to find out the DNS server address specified by the current network connection. To check whether the DNS is valid, you can run the nslookup command.

There is also a possibility that the network connection on the computer is not set correctly, only let the IP be automatically obtained, and the DNS is not set to be automatically obtained, call up the attributes of the network connection, check it, and configure the DNS item to automatically get it.

How do I block the Internet from connecting to the Internet?

1. Restrict the internal computer of the LAN from accessing the external network through the router.

Taking the H3C router as an example, enter its background web management interface, "Security Zone" - "Access Control" - "MAC Control" tab, check the "Enable MAC address filtering" option, and check the "Only prohibit MAC from the MAC address list from accessing the Internet" item, and click "Enable" to enable MAC address filtering.

2. Next, click the "Add" button to increase the MAC address filter information, as shown in the figure, directly enter the MAC address corresponding to the LAN computer to block access to the Internet for specific computers.

3. There are many ways to get the MAC address of the computer, and the easiest way is to enter "getmac" in the MSDOS interface and press the enter key to get it.

4. According to the functional characteristics of routers, some routers also provide the functions of "only allowing clients assigned by DHCP servers to access the external network" and "only allowing clients statically bound by ARP to access the external network", which can also be used as a policy to prohibit LAN computers from accessing the external network.

Then it's not a problem with the local computer, check if the public switch has access restrictions, such as the number of access or address filtering, etc.

If all the machines in the area can access the Internet, only one will not be able to access it.

Divided into 2 parts, the line computer. Either it's a line issue or this computer.

You can first unplug the network cable of the machine next to the Internet to try, if you can go online, it is a line problem, because you can go to the intranet, so the physical line is no problem, check the switching device settings, try to change the port.

If you plug in a normal network cable into the machine, and you still can't access the Internet, you can conclude that it is a problem with the machine, and you can try to change to a normal network card first.

And so on, if you want to solve the problem by excluding testing, you must first know that there is a problem, not a random collision.

The steps to prohibit access to the Internet on the local computer are as follows:

1. Open Internet Options, switch to the "Content" tab, and click the "Family Safety" button;

2. Select or create the account you want to monitor;

3. You can set the restriction policy for the current user, take the "Access Network" parameter as an example, and click "Network Filtering";

4. In "Network Filtering", check "Only access to what I allow", and click "Allow or block specific**";

5. Finally, in the open "Allow or Disable Access" interface, enter the ** you want to allow or disable, and click the "Allow" or "Block" button.

Receive SMS only during the set time period: Go to Account Settings > Notifications > SMS Notifications > Select any time or Custom time to save your changes.

The address of the currently available tool is here

Set not to send me SMS notifications when using Facebook: Go to Account Settings > Notifications > SMS Notifications > Click Don't send me SMS notifications when I'm using Facebook > Save your changes.

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