A Berkeley researcher used a commercially available wireless LAN adaptor card for testing purposes. Scientists at the University of Berkeley, California, have identified errors in the standard protocol IEEE 802.11b for wireless LANs.
Finally, for an even safer security set-up WLAN users should consider creating a IPsec VPN. Use IPsec or SSH encryption In this configuration each device (client and network) is fully authenticated and communicates via an encrypted VPN 'tunnel'.
Think about end-to-end security using PPTP (Point-to-Point Tunneling Protocol), IPSec, firewalls (even at the intranet level) and persistence applications that allow for areas of patchy or no coverage.
We have GPRS, dial-up via local access points, Wi-Fi hotspots as well as IPSec VPNs which provided access across any connection including third-party LANs (providing their firewalls were not too stringently configured).
SSL has become a popular alternative to VPNs that use IPsec encryption and tunneling for connecting remote workers to corporate networks. Because SSL VPNs give access through a standard web browser instead of through an IPsec client running on each...
One approach is to use an IPSec (internet protocol security) VPN but the processing overhead can impact on the quality of the voice service. To prevent this we create a VPN tunnel between the user and the VoIP servers.