Shulou(Shulou.com)06/01 Report--

With the withdrawal of IEEE 802.11n draft, the transmission speed of wireless routing has also made a qualitative leap. However, many users only pay attention to the transmission speed but ignore the security of the wireless network. According to the survey, 90% of the networks are caused by the lack of security settings on wireless routers. Here are several basic security settings that can help you stay away from most threats.

Methods / steps

one

Disable the DHCP feature

DHCP is the abbreviation of Dynamic Host Configuration Protocol (dynamic Host allocation Protocol). Its main function is to help users assign IP addresses randomly, saving users the trouble of manually setting IP addresses, subnet masks and other required TCP/IP parameters. This is originally a user-friendly function, but it has been used by many people with ulterior motives. The general router DHCP function is turned on by default, so that all wireless devices within the signal range can be automatically assigned to IP addresses, which leaves a great security risk. * users can easily get a lot of information about your router through the assigned IP address, so it is necessary to disable DHCP.

two

Wireless encryption

Now many wireless routers have the function of wireless encryption, which is an important protection measure of wireless routers, by encrypting the data in the radio waves to ensure the security of data transmission. General wireless routers or AP have WEP encryption and WPA encryption functions. WEP generally includes 64-bit and 128-bit encryption types. As long as 10 or 26 hexadecimal strings are entered as encryption passwords, the wireless network can be protected.

WEP protocol is a way to encrypt data transmitted wirelessly between two devices to prevent illegal users from eavesdropping or intruding into the wireless network, but WEP keys are generally stored in Flash, so some * * can take advantage of loopholes in your computer network to easily enter your network.

WEP encryption appeared early, and now it has basically been upgraded to WPA encryption. WPA is a standards-based interoperable WLAN security enhancement solution, which can greatly enhance the data protection and access control level of existing wireless LAN systems. WPA strengthens the algorithm for generating encryption keys, and even if packet information is collected and parsed, it is almost impossible to calculate a general key.

The emergence of WPA makes the network transmission more secure and reliable. It should be pointed out that the general wireless router leaves the factory with the wireless encryption function turned off, but if you give up this function, then your network is an extremely insecure network, so it is recommended that you enable this function after setting it up.

three

Turn off SSID broadcast

Simply put, SSID is the name you give to your wireless network. When you search for a wireless network, your network name will be displayed in the search results. Once the user uses a common initialization string to connect to the wireless network, it is very easy to connect to your wireless network, so I strongly recommend that you turn off SSID broadcasting.

Also note that because specific access points or the default SSID of a router can be easily searched on the Internet, such as "netgear,linksys, etc.", be sure to replace them as soon as possible. For the average family, you can choose a name that is quite different.

After turning off SSID and then searching the wireless network, you will find that because there is no SSID broadcast, the wireless network is ignored by the wireless network card, especially when using Windows XP to manage the wireless network, it can achieve the purpose of "hiding people's ears and eyes" so that the wireless network will not be discovered. However, turning off SSID will slightly reduce the efficiency of the network, but the security will be greatly improved, so it is worthwhile to turn off SSID broadcasting.

four

Set up IP filtering and MAC address list

Because the MAC address of each network card is unique, you can improve security by setting up a list of MAC addresses. After IP address filtering is enabled, only users with IP addresses in the MAC list can access the wireless network normally, and others who are not in the list will naturally be unable to connect to the network.

It is also important to note that in the filter rules, be sure to select the option to allow only MAC addresses in the set MAC address list to access the wireless network, or the wireless router will prevent all users from connecting to the network. This method is very practical for home users. Just add a few computers to the list, which can prevent both neighbors from "scraping the net" and those who have sex with you.

five

Active update

Search for and install the latest firmware or driver updates for the wireless router or wireless card you are using to eliminate previous vulnerabilities. Also download and install the operating system used in the wireless function updates, such as Windows XP SP3 or Vista SP1, which can better support the use and security of the wireless network, so that their devices can have the latest functions.

END

Matters needing attention

Also note that if you forget the password you set, you can restore the device to the factory state, that is, press and hold the reset button, but be sure to reset it.

Methods / steps

Disable the DHCP feature

DHCP is the abbreviation of Dynamic Host Configuration Protocol (dynamic Host allocation Protocol). Its main function is to help users assign IP addresses randomly, saving users the trouble of manually setting IP addresses, subnet masks and other required TCP/IP parameters. This is originally a user-friendly function, but it has been used by many people with ulterior motives. The general router DHCP function is turned on by default, so that all wireless devices within the signal range can be automatically assigned to IP addresses, which leaves a great security risk. * users can easily get a lot of information about your router through the assigned IP address, so it is necessary to disable DHCP.

Wireless encryption

Now many wireless routers have the function of wireless encryption, which is an important protection measure of wireless routers, by encrypting the data in the radio waves to ensure the security of data transmission. General wireless routers or AP have WEP encryption and WPA encryption functions. WEP generally includes 64-bit and 128-bit encryption types. As long as 10 or 26 hexadecimal strings are entered as encryption passwords, the wireless network can be protected.

WEP protocol is a way to encrypt data transmitted wirelessly between two devices to prevent illegal users from eavesdropping or intruding into the wireless network, but WEP keys are generally stored in Flash, so some * * can take advantage of loopholes in your computer network to easily enter your network.

WEP encryption appeared early, and now it has basically been upgraded to WPA encryption. WPA is a standards-based interoperable WLAN security enhancement solution, which can greatly enhance the data protection and access control level of existing wireless LAN systems. WPA strengthens the algorithm for generating encryption keys, and even if packet information is collected and parsed, it is almost impossible to calculate a general key.

The emergence of WPA makes the network transmission more secure and reliable. It should be pointed out that the general wireless router leaves the factory with the wireless encryption function turned off, but if you give up this function, then your network is an extremely insecure network, so it is recommended that you enable this function after setting it up.

Turn off SSID broadcast

Simply put, SSID is the name you give to your wireless network. When you search for a wireless network, your network name will be displayed in the search results. Once the user uses a common initialization string to connect to the wireless network, it is very easy to connect to your wireless network, so I strongly recommend that you turn off SSID broadcasting.

Also note that because specific access points or the default SSID of a router can be easily searched on the Internet, such as "netgear,linksys, etc.", be sure to replace them as soon as possible. For the average family, you can choose a name that is quite different.

After turning off SSID and then searching the wireless network, you will find that because there is no SSID broadcast, the wireless network is ignored by the wireless network card, especially when using Windows XP to manage the wireless network, it can achieve the purpose of "hiding people's ears and eyes" so that the wireless network will not be discovered. However, turning off SSID will slightly reduce the efficiency of the network, but the security will be greatly improved, so it is worthwhile to turn off SSID broadcasting.

Set up IP filtering and MAC address list

Because the MAC address of each network card is unique, you can improve security by setting up a list of MAC addresses. After IP address filtering is enabled, only users with IP addresses in the MAC list can access the wireless network normally, and others who are not in the list will naturally be unable to connect to the network.

In addition, it should be noted that in the "filtering rules", be sure to select the option "only allow MAC addresses in the set MAC address list to access the wireless network". If the SMS www.34676.com is not without a line router, it will prevent all users from connecting to the network. This method is very practical for home users. Just add a few computers to the list, which can prevent both neighbors from "scraping the net" and those who have sex with you.

Active update

Search for and install the latest firmware or driver updates for the wireless router or wireless card you are using to eliminate previous vulnerabilities. There are also updates on wireless functions of the operating system used for download and installation, such as Windows XP SP3 or Vista SP1, which can better support the use and security of the wireless network, so that your devices can have the latest functions.

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