Key 802.11 Frames – CWAP#3

This post covers the important 802.11 Frames which can help in performing the analysis and troubleshoot any issues related to WLAN networks. I have referenced Wireshark filters for the ease of each frame. Beacon (1000, Subtype : 8) (wlan.fc.type_subtype == 0x08) Used to announce the Basic Service Set (BSS) for the Client (STAs). Transmitted by…

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How did I Decipher 802.11 Frames! #CWAP-2

Main Objective: To successfully transfer every bit of information(data) from one device to another. 802.11 MAC HEADER Let us now go through the basics of the frame header and the components. I have captured a simple beacon (management) frame using Wireshark. I will briefly explain each of the fields. Notice the number in the bracket…

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CWAP 403 – Start >

I will be summarising each chapter on the Certitrek Publishing – Official Study Guide for CWAP 403 Exam. I’ve learned plenty of concepts from the first chapter – 802.11 – The Protocol. This is one of the chapters which you have to read and learn. One may not learn the contents of this chapter directly…

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CWNA – Chapter 2 Summary & Exam Essentials

CWNA Chapter 2 – IEEE 802.11 Standards and Amendments. “Defined” means the amendment either no longer exists or it was rolled into the existing (or prior versions) 802.11-2007 spec. “Defines” means it is a ratified amendment that will be rolled into 802.11-2011. “Will define” means it is a work in progress and not yet amended….

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CWNA – Chapter 1 Summary & Exam Essentials

Overview of Wireless Standards, Organisations and Fundamentals. 4 Key organisations involved with wireless networking industry – FCC and other regulatory domains (ITU-R (ACMA (Australia)) (ARIB(Japan)) – FCC regulates communication from/to/within US. Both licensed and unlicensed communications are typically regulated in the following 5 areas  – Frequency, Bandwidth, Maximum power of the intentional radiator (IR),  Maximum…

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SSL Inspection : Forti Focus

Often times we come across website which use certificates that not match the certificate of the site. It presents us with a warning message and option to proceed with risks, below image is quite common. A number of applications and website that use SSL encryption correctly. In this case, the traffic goes through a Secure…

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Cisco – Mobility Express Experience

A couple of days ago I bumped into an opportunity to setup Cisco Mobility Express for one of the clients. Cisco has enabled to accomplish a mobility solution which can hep you deploy wireless LAN networks and be able to manage WLAN with APs on the network acting as the controller. Here’s how Cisco describes…

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Packeth – Ethernet Packet Generator

I came across this interesting tool yesterday which helps in generating traffic/sequence of packets on the ethernet.  It is primarily Linux based tool but is supported on Windows/Mac. Haven’t got much luck with Windows but Linux version works well. More info can be found here – http://packeth.sourceforge.net/packeth/Home.html You can create and send any ethernet packet….

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WISP SWITCH – NETONIX

https://www.netonix.com/wisp-switch.html Today I learnt about these new switches after checking them out at a customer’s site. Looks like these switches have more POE capabilities than the traditional client switches. Also known as WISP. The Netonix® WISP Switch™ product line was designed specifically for the WISP industry with a rugged chassis and extended operating temperature range….

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