The three types of frames you can see on an 802.11 network include management, data, and control. Lisa Bock shows the three types of frames in Wireshark and creates an IO graph showing the beacon frames in the capture.
- [Instructor] On a wireless network,…there are three types of 802.11 frames.…Management frames establish connectivity.…For example, you might see beacon frames…transmitting to everyone from the wireless access point,…to all that are listening.…Data frames contain some form of data.…And control frames help with the delivery…of data and management; for example,…in a control frame, you might see…request to send, clear-to-send.…
I'm in Wireshark, and I wanted to show you…what happens when I launch a packet capture on my wi-fi.…Now I'm on a Windows machine.…Now first I'll go up to view,…and wireless toolbar, and right under there,…it says wireless controls are not supported…in this version of Wireless, but we can go over…to the preferences and, in this case,…you can see that I can enable decryption,…which I have before, and in this case,…you would put your key if you do know them.…
But we're not going to; we'll jus cancel that.…And I'll take away the wireless toolbar.…But I will begin capturing on my wi-fi network.…
Author
Lisa Bock
Released
11/14/2018- Tapping into the network
- Baselining the network
- Troubleshooting to discover the cause of a slow network
- Merging traffic
- Sanitizing packet captures
- Capture engines
- Optimizing packet captures
- Basic and advanced IO graphs
- TCP stream graphs
Skill Level Intermediate
Duration
Views
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Introduction
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Enhance your skills1m 5s
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1. Tapping into the Stream
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Enhance your skills2m 7s
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Network architecture6m 41s
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Tap into the network4m 20s
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Baselining the network5m 6s
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Restrictions and limitations6m 45s
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Challenge1m 21s
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Solution4m 15s
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2. Solving Network Problems
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Network congestion3m 24s
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Case study: Spotify4m 12s
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Case study: Multicast3m 55s
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Merging traffic3m 16s
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Sanitizing packet captures3m 33s
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3. Capture Engines and Wi-Fi
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Capture engines4m 22s
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Install Npcap4m 59s
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IEEE 802.11 overview4m 47s
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802.11 packet types5m 14s
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4. Command Line Capture
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Optimize packet captures5m 7s
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tshark and dumpcap2m 33s
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text2pcap and capinfos4m 3s
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capinfos and editcap3m 13s
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5. IO and Stream Graphs
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Basic IO graphs5m 59s
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Conversations and endpoints5m 42s
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TCP stream graphs6m 46s
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Advanced IO graphs4m 35s
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Conclusion
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What's next?1m 13s
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Video: 802.11 packet types