When talking about wired security, enterprise IT administrators talk about multiple layers of defense such as internet firewalls, VPNs, admission control, email filtering, content filtering, web application scanning and many others. However, when considering the security of a wireless network, the same enterprise IT administrators are content with the basic security provided as a part of wireless LAN infrastructure by vendors such as Cisco Systems and Aruba Networks. This is a flawed security practice.
A Wireless Intrusion Prevention System (WIPS) must be installed as a strong inner layer of defense when hackers penetrate the basic security built into the wireless LAN infrastructure. Additionally, the WIPS and the WLAN infrastructure should be sourced from different vendors to ensure non-overlapping weaknesses and hence, strong security. A WIPS combined with WLAN infrastructure from different vendors enables a strong wireless security posture for an organization.