Why can t I get internet access on my server?

Personally, I think it may be a port problem with the firewall, you can try it according to my method or ideas, and give you some suggestions I hope it can help you:

Is the server available? In our network connection, are the DNS servers set up? Are there any bugs?

2.Is the firewall communication port banned? The default communication port of the HTTP protocol is 80, you first need to check whether port 80 is open?

The QQ server uses port 8000, and the client uses port 4000 (maybe I remember it wrong), can you also check whether communication is allowed? If you want to know if it's because the firewall is actually very simple, you just need to turn off the firewall for 1 minute, and then try to see if it can be turned on**. If you can explain that it is still a problem with the firewall, if it still doesn't work, then look at other configurations.

3.Your switch configuration. Because the server is linked to the switch, you check whether your switch port is bound to the IP or MAC, it is best to take this opportunity to directly tie your switch and the server to avoid accidents in the future.

4.Antivirus! You mentioned that you can't surf the Internet suddenly, which means that this problem may not be a common problem, the ability of the virus is not small, and it is also very possible that the ARP virus causes your IP to not be parsed normally.

5.You keep mentioning your hardware model and system version number, but in fact, in general, the possibility of hardware failure is very small. Let's try the above method first.

ps: You can try the first two of the 3 points used on the second floor, and the third point is that you can't use telnet to access port 80. Because telnet communication is through port 23, and port 23, whether it is a Windows firewall or any version of the firewall, is basically blocked by default.

Unless the company intranet is reset to open the seal. Best wishes.

Hello, if you mean that you can't access the Internet with broadband, you can do it as follows:

Perform stand-alone dial-up, if you are using a router, please temporarily disconnect the router for testing;

Check whether the network cable or ** cable is loose;

Check whether the network device such as the modem is overheated, and try again after restarting.

It is recommended that you run a full virus scan of your computer.

If the problem cannot be resolved after self-service troubleshooting, it is recommended that you contact the local customer service to report the problem.

There may be several reasons for this phenomenon:

2. There is a local failure of the broadband line, resulting in the inability to access the Internet through the router, so there will be a phenomenon that this kind of wifi is normal but the software prompts that it cannot be connected to the server;

3. The broadband has expired and is cut off by the operator, and you need to go to the business hall to renew the payment, which will also lead to the phenomenon that the mobile device can access the wifi but cannot access the Internet;

4. The router has turned on the IP address filtering function, and the current IP address of the mobile phone belongs to the IP address range that is prohibited from accessing the Internet;

If you want to further confirm the cause of the failure, you can first connect the modem to the computer, then dial up the Internet with the dial-up network to see if it can be connected, then connect the router to the computer, check the settings of the router to see if there is any setting error, and then run the app on the mobile phone that needs to be connected to the Internet, and see how many software prompts that you cannot connect to the server.

First of all, you have to check whether the network server you want to connect to is normal, you can test the status of the network server by ping the host address, if it can ping, it means that your connection is normal Second, you can look at the specific problem that you can't connect, such as no permission, or a wrong password, etc., and then analyze the cause through the fault.

The reasons for the failure to connect to the server are: 1. If the network fails, you can use the disconnected first aid kit to detect and repair it; 2. The computer has set the connection limit, and you can manually set the DNS to fix it.

I hope mine is helpful to you and I wish you a happy life Oh Please help give a thumbs up if you can Thank you.

Questions. How to do it.

iPhone. 1. Eliminate network problems: This prompt may also be caused by an unstable network connection, you can switch from mobile data to Wi-Fi connection, or try to connect to a more stable wireless network.

Or you can determine if the current Wi-Fi is working and restart the router if there is a problem. If the problem still can't be solved, you can try to reset the network settings in [Settings] - [General] - [Restore] (this operation will make all saved Wi-Fi passwords disappear and you need to reconnect), and then reconnect to Wi-Fi to see. If that doesn't work, you can also try restarting your device and seeing if you can sign in or out.

2. Check Apple's official website: Click here to view the list on the "System Status" page of Apple's official website. If your Apple ID doesn't show a green dot, there may be a problem with Apple's servers and you can try to sign in later.

3. System settings: You need to check whether the mobile data in the system settings is off. Generally, Apple mobile phones display errors when connecting to Apple ID servers, a large part of the reason is caused by accidentally turning off the mobile data in the system settings.

Open the phone settings, check the [Cellular], then find the [Settings] option in the app data management list, enter it, and check [WLAN and Cellular] to solve the problem.

There is an exclamation mark that the network cannot be connected, how can the network connect to the local area normally.

If it is a single **, it may be caused by limitations, if all can not be used, it is a problem with the network cable.

Because it is not possible to connect to the server.

Whether it's a shared connection, or a **connection, please make it clear!

1.If you could connect before, you can't connect now:

2) Check if the Wi-Fi password entered is correct.

2.If you can't connect for the first time or can't connect to a public Wi-Fi:

Check whether other devices under the same wireless network are connected properly and whether connection restrictions are set on the wireless network.

3.If you cannot connect to the wireless network with the Chinese name:

Due to device compatibility issues, some wireless networks with Chinese names or special characters may not be able to connect, it is recommended to change the wireless network name to English.

Please check whether the router connection is normal (Fan regrets that you can't connect to the cat), turn off the phone and the router and restart it before trying to connect.

5.If none of the above operations work, it is recommended to back up important data (contacts, text messages, **, etc.) and try to restore factory settings.

Right-click on My Computer, click Properties, click Device Manager, click on the network adapter to see if there is a question mark, if there is, right-click on it, click Update Driver, click Auto Install. If there is no question mark, right-click to uninstall and restart your computer. There is also the need to re-enter the password.