WIRELESS LAN SECURITY

Wireless LAN Security :

All networks today need good security, but WLANs have some unique security requirements.

WLAN Security Issues :

WLANs introduce a number of vulnerabilities that do not exist for wired Ethernet LANs. Some of these vulnerabilities give hackers an opportunity to cause harm by stealing information, accessing hosts in the wired part of the network, or preventing service through a denial-of-service (DoS) attack. 

Other vulnerabilities may be caused by a well-meaning but uninformed employee who installs an AP without the IT department’s approval, with no security. This would allow anyone to gain access to the rest of the Enterprise’s network.

War drivers: The attacker often just wants to gain Internet access for free. This person drives around, trying to find APs that have no security or weak security. The attacker can use easily downloaded tools and high-gain directional antennas (easily purchased and installed).

Hackers: The motivation for hackers is to either find information or deny services. Interestingly, the end goal may be to compromise the hosts inside the wired network, using the wireless network as a way to access the Enterprise network without having to go through Internet connections that have firewalls.