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Wireless Technology
With the development of science and technology, as well as improvement of living standards, modern families have two or more computers is very common thing. Many families have opted for a wireless router to share Internet access, wireless Internet access to free people from the line tangled, so that people in the wireless world, the freedom of surfing the Internet. However, please note that refers to people here is not just your family but also your neighbors and even some strangers. The introduction of the draft IEEE 802.11n wireless routing of the transmission speed is also A qualitative leap forward. However, many users only concerned about the transmission speed and have neglected the security of wireless networks. To this writer as an example, the balcony at home can search to 78 wireless connection, which have not even set up a password, you can easily "sharing" his network bandwidth. According to the survey showed that 90% of network intrusion is because there is no wireless router security settings accordingly caused.
DHCP function
DHCP is the Dynamic HostConfiguration Protocol (Dynamic Host Allocation Protocol) acronym for the main function is to help users randomly assigned IP addresses, eliminating the need for users to manually set IP address, subnet mask, and other required TCP / IP parameters of trouble. This should have been user-friendly features, but were using a lot of people with ulterior motives. General router DHCP feature is enabled by default, so that all signals within the scope of wireless devices can be automatically assigned to the IP address, which left a great deal of security risks. An attacker can easily allocated IP address of your router got a lot of relevant information, it is necessary to disable DHCP function.
Encryption
Now many of the wireless router has wireless encryption, which is a wireless router important protective measures, through the radio waves of data encryption to ensure the transmission of data information. General wireless router or AP has WEP encryption and WPA encryption, WEP is generally taken to include 64-bit and 128-bit encryption of two types, as long as the input, respectively, 10 or 26 of 16 hexadecimal string as encrypted password protection wireless network. WEP is an agreement between the two devices in the wireless transmission of data encrypted to prevent unauthorized users tapping or invasive wireless network, but in general is the WEP key stored in Flash, so that some hackers can use your network loopholes easy access to your network.
WEP encryption emerged earlier, we have been upgraded to WPA encryption, WPA is a standards-based interoperable WLAN security-enhanced solutions that can greatly enhance existing wireless LAN system of data protection and access control levels ; WPA encryption key to generate enhanced algorithms, even if hackers packet of information collected and their analysis, it is almost impossible to calculate the common key. The emergence of WPA enabled networks more secure.
SSID broadcast
To put it simply, SSID is your own wireless network by name. In search of wireless network, your network name will be displayed in search results. Once an attacker using a common initialization string to connect to wireless networks, much more easily than the invasion to your wireless network, so I strongly recommend that you turn off SSID broadcasting.
Would also like to note that due to a specific type of access point or router's default SSID online can be easily searched, such as "netgear, linksys, etc." and therefore must be replaced as soon as possible. For the average family to choose the larger differences can be named.
The closure of the wireless network SSID and then search you will find that the absence of SSID broadcast, the wireless network by wireless card overlooked, especially in the use of Windows XP wireless network management can be achieved, "to deceive the public" purpose, so that the wireless network will not be found. However close the SSID network efficiency would slightly lower, but security will be greatly enhanced, so turn off SSID broadcasting is still very worthwhile.
IP filtering and MAC address list
As each card's MAC address is unique, so it can be by setting the MAC address list to improve security. In the opening of the IP address filtering, only the IP address in the MAC in the list of normal users can access the wireless network, the other is not on the list can not even enter the network. Also requiring attention in the "filtering rules" we must choose "allow only MAC address list has been established already in force in the MAC address access the wireless network" option, or wireless router will block all users connected to the network. For home users for this method is very practical, the home of a few computers on the list to add a few can, so that both can be avoided neighbor "rub net" can also prevent an attacker from the invasion.
Active Update
Search and install the wireless router or wireless card the latest firmware or driver updates, the elimination of pre-existing loophole. Also download and install the operating system used in the wireless functionality updates, such as Windows XP SP3 or Vista SP1 and so on, this can better support the use of wireless networks and security, to make their own devices to have the latest features.
The speed of wireless networks getting faster and faster wireless network security is also the growing. In fact, as long as the above-mentioned a few simple settings can enhance your level of security a lot. Wireless network environment is not as simple connection of safety work to the house to make use of more carefree comfort.
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