Default web password is wifi wep password là gì năm 2024

WEP stands for Wired Equivalent Privacy, a Wi-Fi wireless network security standard. A WEP key is a security passcode for Wi-Fi devices. WEP keys enable devices on a local network to exchange encrypted (mathematically encoded) messages with each other while hiding the contents of the messages from easy viewing by outsiders.

How WEP Keys Work

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Network administrators choose which WEP keys to use on a network. As part of the process of enabling WEP security, matching keys must be set on routers as well as each client device for them to communicate with each other over the Wi-Fi connection.

WEP keys are a sequence of hexadecimal values taken from the numbers 0 through 9 and the letters A through F. Some examples of WEP keys are:

• 1A648C9FE2
• 99D767BAC38EA23B0C0176D152

The required length of a WEP key depends on which version of the WEP standard the network runs:

• 40- or 64-bit WEP: 10 digit key
• 104- or 128-bit WEP: 26 digit key
• 256-bit WEP: 58 digit key

To assist administrators in creating correct WEP keys, some brands of wireless network equipment automatically generate WEP keys from regular text (sometimes called a passphrase). Additionally, some public web sites offer automatic WEP key generators that generate random key values that are difficult for outsiders to guess.

Why WEP was Once Essential for Wireless Networks

As the name suggests, WEP technology was created to protect Wi-Fi networks up to the equivalent levels that Ethernet networks had been protected. The security of wireless connections was significantly less than that of wired Ethernet networks when Wi-Fi networking first became popular.

Network sniffer programs allowed anyone with a bit of technical know-how to drive through residential neighborhoods and tap into active Wi-Fi networks from the street. This became known as wardriving. Without WEP enabled, sniffers could capture and view passwords and other personal data unprotected households sent over their networks. Their internet connections could also be reached and used without permission.

WEP was at one time the only widely-supported standard for protecting home Wi-Fi networks against sniffer attacks.

Why WEP Keys are Obsolete Today

Industry researchers discovered and made public major flaws in the design of WEP technology. With the right tools (such as programs built to exploit these technical flaws), a person could break into most WEP protected networks within a matter of minutes and perform the same kind of sniffing attacks as on an unprotected network.

Newer and more advanced wireless key systems including WPA and WPA2 were added to Wi-Fi routers and other equipment to replace WEP. Although many Wi-Fi devices still offer it as an option, WEP has long been considered obsolete and should be used on wireless networks only as a last resort.

FAQ

• How can you find the WEP key on an iPhone? If you're looking for the WEP for a mobile hotspot, you can generally find it in Settings > Cellular > Personal Hotspot.

What is a WEP key for the Nintendo DS?

A WEP key on the Nintendo DS functions the same way as a WEP key for a PC or mobile device. It's an extra layer of security between the handheld console and the Wi-Fi network it's connected to.

If you are using a router that provides Wi-Fi Internet connections, you need a password to authenticate a connection to the network. If you don't know the password, but you own or administer the router yourself, view the password or reset it to something new using the steps below.

First, let's briefly discuss how Wi-Fi passwords work so you can better understand how they're configured.

Wireless encryption methods

The three types of authentication for consumer Wi-Fi are WEP (Wired Equivalent Privacy), WPA and WPA2. Most home routers have all three options, but WPA2 is the most secure and should always be used if possible.

• WEP stands for Wireless Equivalent Privacy and was introduced in September 1999, and originally provided only 64-bit encryption (it was later upgraded to offer 128-bit encryption). WEP was officially deprecated in 2004 because it is less secure than the newer methods. However, it is still found on modern routers for purposes of backward compatibility.
• WPA stands for Wi-Fi Protected Access. Introduced in 2003, it supports 256-bit encryption methods including AES (Advanced Encryption Standard). It was intended to bridge the gap between WEP and the more complex WPA2.
• WPA2 is an updated version of WPA which was introduced in 2004. It enforces AES and implements some stronger supporting protocols such as CCMP (Counter Cipher Mode). While WPA2 still has some known vulnerabilities, they require significant computing resources, and the attacker must already be able to access the local wireless network. WPA2 is still used today as the standard for robust consumer-level wireless encryption.

Note

Most routers offer two types of WPA2 encryption, called WPA2-Personal and WPA2-Enterprise. The enterprise version of WPA2 is for corporate settings where an IT department controls company-wide security policies. For other settings, including wireless Internet in your home, WPA2-Personal is the encryption method to use.

All these methods require a password, also known as an encryption key when you try to connect. If you provide the correct key, a wireless connection is established.

I don't know what my key is. How do I connect to the wireless network?

If you forgot the key for connecting to your wireless network, you must access the router's configuration interface using an Internet browser.

Normally, you could do this over the wireless network. But because you don't have the password, you cannot.

Therefore, to connect to the router, you have two options:

• .
• .

Create a wired connection to the router

If you have an Ethernet cable, and an Ethernet port on your computer, you can create a wired connection to your router.

Routers sometimes come packaged with a short Ethernet cable, also known as a category 5 cable, for exactly this purpose. It should have a connection at each end like the one pictured at right. If you don't have one, you can purchase one online, or at your local electronics store. A short cable length is fine — 3-feet should be sufficient.

Connect one end of the cable to your computer or laptop. Connect the other end to the back of the router, as shown in the picture.

Note

Your router may have one Ethernet port for incoming connections, labeled "WAN" that is for the Internet connection. Do not connect your Ethernet cable to this port. Instead, connect your cable to one of the ports marked "LAN." These ports distribute the Internet to other devices, such as your computer.

After connecting the cable to both your computer and your router, your operating system should automatically detect the connection. You can now proceed to .

Reset the router to its factory defaults

If you don't have an Ethernet cable, or if making a wired connection is otherwise inconvenient, you can reset your router to the factory default settings. Doing so resets the name of your wireless network also known as the SSID (service set identifier) and the encryption key. These default values are often found printed on a sticker affixed to the case of the router itself.

If you decide to factory reset your router, be aware that any other custom configuration or other changes are going to be reset to the default settings. Check the manufacturer's documentation for your model of router before proceeding. If you don't have the physical instruction manual, you can find it online under the "support" section of your manufacturer's website.

After resetting your router to factory defaults, you'll be able to connect to the wireless network using the default SSID and encryption key. When you are connected, you can proceed to the next step,

For more information about resetting your router, see: How to reset a forgotten username and password on a router.

Accessing the router configuration

Once you have connected to your wireless router (by a wired connection, or using the default wireless network credentials), you can access your router's configuration in a web browser. In a browser window, enter your router's IP address in your browser's address bar, and press Enter.

If you're unsure what your router's IP address is, you can try one of these common router addresses:

• 192.168.0.1
• 192.168.1.1
• 10.0.0.1
• 10.0.1.1

Some routers also allow you to connect by entering a hard-coded URL (uniform resource locator). For instance, many Netgear wireless routers allow you to use the address www.routerlogin.net to access your router.

Consult your router's manual for the correct address of your router, and navigate to that address in your web browser.

Logging into the router as an administrator

After navigating to your router's IP address in your web browser a login prompt should appear asking your for the router's administrator username and password.

If you don't remember the administrator name and password, or if you're unsure, consult your router's manual for the default login values. Below are commonly used insecure defaults.

• admin / admin
• admin / password

Warning

Never leave your router's administrator name and password at their default values as they anyone can find them via an Internet search. Always change these values when configuring your wireless router. At a minimum, change the password to a strong password you'll remember.

If you cannot log into your router because you can't remember the login information, and the default username and password don't work, you can .

Once you have logged in, you can view or change your router's configuration.

Viewing and changing the encryption key (wireless password)

Every router's configuration interface is different. Below is an example of how a router's setup may appear.

In your router's configuration interface, look for a section called Wireless, or something similar. You're looking for the page where you can change the wireless network's configuration, including its SSID name and authentication key. If you're unable to locate it, consult your router's manual for specific instructions.

When you find the wireless network configuration page, you can view the values and make changes. For Authentication Method, choose WPA2-Personal. You can set the encryption key (password) in one of the text fields below this. Consult your manual if you're unable to locate the correct field.

The encryption key is often displayed in plain text, so if you only need the current password, it should be visible on this page.

At this time, change your SSID name, which is the name that appears in the list of available wireless networks.

If you make any changes to your router's configuration, make sure to save them. For instance, in the example pictured above, you'd click the Apply button.

Note

Many modern wireless routers offer two wireless networks which broadcast at frequencies of 2.4 GHz and 5 GHz, respectively. The configuration for each network may appear on separate pages. If you are using both networks, make sure they are both configured the way you want, and you know the password for each. Consult your router's manual for more information regarding dual-band Wi-Fi configuration.

Verify you can connect to the wireless network

• Make sure all changes are saved and you have restarted your router, if necessary. If you are using a wired connection, disconnect the Ethernet cable now.
• If you changed the SSID or key, you are disconnected from your router when the new configuration takes effect. Therefore, you'll need to log into your wireless network using the new credentials.
• If you reset your router to its factory defaults, we recommend you change the router's administrator username and password to something other than the default values. You can do this from in the router's configuration interface. Consult your router's manual if you have any difficulty locating the correct menu and configuration options.

If you've tried all the above suggestions and still can't log on, we recommend contacting the router manufacturer directly for technical support.