ISAC Cambodia (InfoSec)

Wireless LAN Security Mega-Primer Part 5: Dissecting WLAN Headers

In this video, we will dive deep into WLAN Header fields – Frame Control, Duration/ID, BSSID, SA, TA, DA, Sequence Control, QoS control, Frame Body, FCS etc. We will also look at an in-depth introduction into the bit fields in Frame Control which include – type, subtype, to ds, from ds, more fragments, retry, power management, more data, protected frame etc.

Though I will be using Wireshark to help you understand these header fields, I do not deny that this video is a bit theoretical and long 🙂 but I would really encourage you to go through this as it will give you a firm grounding in WLAN protocol basics. This is a must for future videos when we will discuss various attacks.

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Mr. OU Phannarith is one of the well-known cybersecurity experts in Cambodia and the region. He is the founder of the first leading information security website ( in Cambodia. He has been invited to present in global conferences, forums, and seminars and he was awarded in Information Security Leadership Achievements (ISLA) in 2016 by (ISC)2 and in December 2012 as one of the top 10 Chief Information Security Officers (CISO) in ASEAN by the International Data Group (IDG). Mr. OU has been the Professor specializing in Cybersecurity.

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