Why do some networks require a password and some network connections don t?

This is of course, some are open and shared, if it is a wireless network, as long as you are in the coverage area of its network, the wired LAN needs a network cable to connect the router, you can use the resources of this network for free, and some need to be verified, such as the company, or home use, if there is no security verification, it will not become a public anyone can use the resources of the network, and the LAN is not secure. Open ones are generally public places such as: airports, train stations, large hotels, cafes, McDonald's restaurants, etc., but small occasions such as cafes and McDonald's require password verification, but they are basically the ** number of the place, if not, you can ask the service staff of the place.

In the final analysis, it is your problem, the username and password are because the administrator has set the need for authentication, and what you don't want is that the administrator has set the need for authentication.

Summary. When the password is entered correctly but still unable to join the network, there are usually several possible causes:1

Router issues: First, verify that the router is working properly. Check if the router is connected to the internet and confirm that other devices can successfully connect to the network.

Another possible problem is that the IP address of the device conflicts with other devices in the network. Each device needs to have a unique IP address on the network. In some cases, when two or more devices try to use the same IP address, the network will not work properly.

The network configuration of the device may be incorrect. Make sure that the network connection type is set correctly (e.g., using dynamic IP address assignment or static IP address) and that the gateway and DNS server addresses entered are correct. 4.

Firewall or filter issues: Firewalls or network filters can prevent your device from connecting to the network. Check your firewall settings or network filter rules to make sure your device isn't blocked.

5.Driver or firmware updates: If your device drivers are outdated or your firmware needs to be updated, it can cause connectivity issues.

Try updating your device's drivers or firmware, and reconnect to the network.

When the password is entered correctly but still unable to join the network, there are usually several possible causes:1Router Issues:

First, verify that the router is working properly. Check if the router is connected to the internet and confirm that other devices can successfully connect to the network. If other devices can connect, then there may be something wrong with your device.

Each device needs to have a unique IP address on the network. In some hearth attack situations, when two or more devices try to use the same IP address, the network will not work properly. In order to solve this problem, you can try to assign a new IP address to the device, or set a static IP address through the router.

3.Network misconfiguration: The device may have an incorrect network configuration.

Make sure that the network connection type is set correctly (e.g., using dynamic IP address assignment or static IP address) and that the gateway and DNS server addresses entered are correct. 4.Firewall or filter issues:

A firewall or network filter might prevent your device from connecting to the network. Check your firewall settings or network filter rules to make sure your device isn't blocked. 5.

Driver or firmware updates: If your device drivers are outdated or your firmware needs to be updated, it can cause connectivity issues. Try updating your device's drivers or firmware, and reconnect to the network.

6.Hardware issues with the device: Finally, if all of the above methods still fail to connect the device to the network, then the device itself may be faulty.

In this case, it is advisable to contact the device manufacturer or seek professional help. If you are unable to resolve the issue on your own, it is recommended to consult a network technician or contact the technical support department of the setup manufacturer for more detailed guidance and support.

Cause. 1. The wifi itself is a problem, and it may be that the Lingchong Yu wifi is not connected normally, resulting in the inability to access the Internet.

2. Router problems, the router may be overheated or damaged.

3. Broadband arrears may lead to inability to access the Internet.

Precautions for the use of wifi.

First, be cautious about using WiFi hotspots in public places. The WiFi provided by the official organization and has a verification mechanism can be connected and used after confirmation by the staff. Other public Wi-Fi that can be connected directly and do not require verification or password are risky, and there may be phishing traps behind them, so try not to use them.

Second, when using WiFi hotspots in public places, try not to conduct online shopping and online banking operations to avoid important personal sensitive information being leaked or even being hacked for bank transfers.

Third, develop good WiFi usage habits. The mobile phone will record the wifi hotspots used, if the wifi switch is turned on, the mobile phone will continue to search for the surroundings, once it encounters the hotspot with the same name, it will be automatically connected, there is a risk of phishing. Therefore, when we enter a public area, try not to turn on the wifi switch, or turn the wifi to the lock screen and no longer connect automatically, so as to avoid connecting to malicious wifi without us knowing.

The password is correct, you can't join the network, because you don't have wifi, so you can't check the network without wifi.

1. The wifi itself is a problem, and the wifi may not be connected normally, resulting in the inability to access the Internet. 2. Router problems, the router may be overheated or damaged. 3. Broadband arrears may lead to inability to access the Internet.

Precautions for WiFi use First, be cautious about using WiFi hotspots in public places. The wifi provided by the official airframe and has a verification mechanism can be connected and used after confirmation by the staff.

Summary. Dear, good evening Taking wifi as an example, the reason why you can't join the network if the password is right is because you can't join the network because the number of wifi links is too much, the upper limit is reached, or the IP conflict is caused by the inability to join the network.

Take WiFi as an example, the reason why the password is correct and cannot add the core type to the network is due to the excessive number of WiFi links, which reaches the upper limit of guessing or causes IP conflicts and cannot join the network.

How to fix it. Pro, a password is a symbol that is compiled according to a specific law and is used to transform the information of both parties to the communication. Ciphers are a technique used to obfuscate users who want to turn normal (recognizable) information into unrecognizable information.

But this unrecognizable part of the information can be reprocessed and recovered. Password is a generic term for "password" in Chinese. The "password" entered when logging in**, e-mail address, and bank withdrawals should technically only be called a "password", because it is not "encrypted**" in the original sense, but it can also be called a secret number.

It is mainly limited to the system of symbols that are understood by an individual person (e.g. a message).

Such as cipher telegram, cipher typewriter. A password is a symbol that is compiled according to a specific law and is used to transform the information of both parties to the communication. In other words, the password is a sequence of symbols that conceals the real content.

It is to transform the information expressed in the open and standard information code into an information code that cannot be read by anyone other than the two parties to the communication, and this unique information code is the password.

Apple's connection password is correct, but it shows that it can't join, how to solve it.

Dear, the solution is to reduce the number of wifi connections.

There are too many people connected to your wifi.

There is no mobile phone connection and no joining.

Other devices can be connected, but this device cannot.

Dear, wait a minute.

Dear, sometimes the router will assign the same IP address to the two connected devices, resulting in a Na Que IP address conflict, Song Tong encounters this situation, just need to restart the wifi switch.

Dear, you try.

This method. No way.

Dear, wait a minute, I'll take a look.

Dear, yours is an iPhone, right, you can do this to understand wifi:1Open Settings on your phone and tap "General".

2. Click "Fake Funny Restore" and click Reset Network Settings. 3.Wait for your phone to restart and tap Settings again.

4.Click Wi-Fi and Ready, select the one you want to connect to, re-enter your password, and click Join. Curved shed. Connect.

Summary. First of all, the easiest and most brutal way is to restart, whether it's a router or a mobile phone. If you still can't connect after restarting, then you have to try the following methods;

1. You can turn on and off the wireless wifi of the mobile phone, and you can disconnect the wireless connection of the mobile phone by turning on the [airplane mode], the wireless wifi password is correct but you can't connect to the wireless wifi, which may be because the mobile phone has a wrong system connection, and the password is right and you can't join the network.

If it's a mobile phone, it is recommended to restart, and generally this can be solved.

First of all, the easiest and most brutal way is to restart, whether it's a router or a mobile phone. If you still can't connect after restarting, then you have to try the following methods; 1. You can re-switch the wireless wifi of the mobile phone, and you can disconnect the wireless connection of the mobile phone by turning on the [airplane mode], the wireless wifi password is closed but the state is indeed closed, and the wireless wifi may not be connected to the poor wireless wifi may be because of the wrong connection of a certain system of the mobile phone, I hope it can help you!

chinanet is a public network in China, after you link, then open the QQ browser, click on a web page, there will be an account password, enter your mobile phone number on the account, and then there is a get password next to it, click to get the password, and soon it will send you a text message, there is a password on the text message, enter the password in the password box, and then link, my mobile phone is telecom, you try it.

The public ones seem to be generally accessible without a password.

Individual private service stores may have a common password, and the general waiter can tell you.

Generally, private wifi is directly set with a password.

That is to say, after you click on WiFi, you will directly jump out of the system-level password dialog box. You've entered it correctly. The wave of wireless signal appears, indicating that the connection is successful.

The public ones are divided into those that do not set a password. Click in and you can use it directly.

and If you don't set a password, you need to verify after clicking in.

What needs to be verified is that after you click on wifi, you don't need to set a password, and the wave of wireless signal will appear, indicating that the connection is successful.

Then, some of them will automatically jump to a web page and ask you to enter your mobile phone. Or a password. Something.

Some are when you open the browser and look at something, it automatically jumps to a web page and asks you to enter your phone. Or a password. Something. It's a second verification.