Band steering is a feature of accepting the connection over the preferred band. In most of the cases, we would like dual-band mobile clients to associate with interference-less band which is 5GHz, instead of 2.4 GHz. The feature isn't defined in any 802.11 standards, it is rather proprietary feature implemented in most of the enterprise … Continue reading band steering →

EAP-Protected Extensible Authentication Protocol (EAP-PEAP): creates an encrypted TLS tunnel within which the supplicant's identity is validated supplicant identity/credentials are always encrypted inside the TLS tunnel also referred as 'EAP inside EAP' all PEAP versions require a server-side certificate all PEAP versions require two phases highly secured EAP type 3 major PEAP versions: EAP-PEAPv0 (EAP-MSCHAPv2): … Continue reading EAP-PEAP →

There are many possibilities of taking packet capture to troubleshoot a wireless or wired network or application issues. Before you take a packet capture, there are several tips, which can save you a lot of time and money.   1. Check details of the WLAN adapter / AP Nowadays there are 2nd wave 802.11ac capable … Continue reading Things to do before you take a packet capture →

Deauthentication frame is a frame sent by the AP or mobile client to completely terminate a connection with the Wi-Fi network. It is a notification, which doesn't have to be acknowledged. According to the standard there are specified multiple reason codes, which are obviously seen during frames analysis. Some of the vendors include the information … Continue reading deauthentication frame →

During my work in TAC I have seen a lot of configs with improper usage of EIRP for APs with external antennas. Basically for the APS with bult-in antennas, the system knows about the antenna gain and calculates properly the EIRP, not exceeding the regulations of the region. When we use external antennas for indoor … Continue reading antenna gain →