Off-channel scan is in an important operation, where the AP collects information about the specific area where it is mounted. It will report sources of interference, different SSIDs implemented on each channel, duty cycle etc. This information is useful for dynamic RF module developed by each vendor and wireless intrusion detection/prevention system (WIDS/WIPS). The idea … Continue reading off-channel scan and voice traffic →

In WPA/WPA2 Personal Wi--Fi networks, the only element responsible for security is a preshared key (PSK), which in fact is a pairwise master key (PMK). In a process 4-Way Handshake, both the mobile client and AP generates dynamic keys without sending a preshared key in the air. Every association between AP and mobile client must … Continue reading unicast key rotation →