With the introduction of 802.11n and Mesh technologies, Wireless Local Area
Network (WLAN), as an emerging Internet broadband access method, is gradually
changing people's traditional way of surfing the Internet based on fixed
broadband. Get rid of the shackles of network cables, people can connect to the
Internet through portable terminal devices such as laptops, netbooks,
smartphones, etc., in any place where a wireless local area network is deployed,
such as libraries, shopping malls, cafes, restaurants and other public places
and office buildings. and other office spaces, which greatly meets the urgent
needs of users who need to access the Internet anytime, anywhere. The
application of the centralized WLAN architecture greatly reduces costs and
simplifies tasks such as wireless system management, security, and upgrades,
resulting in rapid popularization and rapid development of WLANs.
Wireless local area network adopts wireless channel as the information
transmission channel between terminal and access point (Access Piont), which is
more open and convenient than traditional fixed line, but also brings new
challenges to network security. The original fixed LAN network security
technologies, strategies and management methods can no longer meet the needs of
network security under the new situation of wireless LAN. Especially for
enterprises with high demands on network security, how to effectively prevent
illegal access from the outside world and protect sensitive information while
using WLAN to improve office conditions is the focus of current enterprises.
While some standards, such as Wi-Fi WPA2 and 802.11i, offer a whole new
level of wireless security capabilities and are supported by new monitoring and
intrusion prevention tools, the focus of enterprises has shifted to how to
combine traditional network security with physical security. Combined, a new
network security solution based on location information is formed. Helps
businesses balance the need to provide the necessary checks on this unmanageable
freedom while providing mobile Internet access for their own employees and
visitors.
For example, an enterprise deploys a wireless local area network in its own
office building to facilitate employees to work, but the enterprise does not
want people outside the office building to access its own wireless local area
network to prevent security risks such as network attacks and sensitive
information theft. For another example, an enterprise needs to implement
wireless Internet access for the human resources department because of office
work, but it needs to restrict wireless access except for the human resources
department to prevent others from accessing sensitive data within the
department, such as employee information and performance appraisal
information.
This is where location-based security technology comes into play:
restricting WLAN access based on the user's location. In addition to adding a
layer of physical security, location control plus access control can prevent
overloading of network elements (and prevent "denial of service" attacks), as
well as restrict where guests can access the network.
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