Privacy Pioneer Promises Secure VOIP

LAS VEGASPhil Zimmermann, the celebrated cryptographer who created PGP (Pretty Good Privacy) for e-mail encryption, is taking a shot at securing VOIP communications. Zimmermann took the stage at the Black Hat Briefings here to show off Zfone, a prototype application...

Wireless Network Concern

Now more and more network build by wireless equipments. There are still something concern. 1) What is the range of wireless? Types of Wi-Fi Network Protocol Maximum Speed Average Speed Wireless Range 802.11a 54Mbps 27Mbps 12m indoors, 30m line-of-sight outdoors...