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6 Feb 2021 18:16:07 UTC
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Export to CSV with Wireshark
tons of info at www.thetechfirm.com
Since the Export to CSV changed with Wireshark ver 1,8, I got a few emails asking how to do it. Well here it is.
Linkedin Profile http://ca.linkedin.com/in/fortunat
Lovemytool Blog: http://www.lovemytool.com/blog/tony-fortunato/
Youtube Channel: http://www.youtube.com/user/thetechfirm
...
https://www.youtube.com/watch?v=4x_5RhKoHL4
Since the Export to CSV changed with Wireshark ver 1,8, I got a few emails asking how to do it. Well here it is.
Linkedin Profile http://ca.linkedin.com/in/fortunat
Lovemytool Blog: http://www.lovemytool.com/blog/tony-fortunato/
Youtube Channel: http://www.youtube.com/user/thetechfirm
...
https://www.youtube.com/watch?v=4x_5RhKoHL4
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video/mp4
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English
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5 THI
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5 Things To Do With Your Aircheck
While working on site, a client was impressed with all the ‘quick’ things I did with my various tools. He then commented that I should write some of your tips and tricks up. At first, I thought I already do that, but then realized that I haven’t done it for all of my tools.
So here you go, some tips and tricks for using the Netally Aircheck G2.
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https://www.youtube.com/watch?v=D_LkeP7lDZ8
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1 month ago
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COLAS
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nChronos Product Quick Tour
As an independent troubleshooter, I am always interested in tools that are portable and provide instant information.
Many times when I am looking at a customer's problem, I cannot assume that they will graciously give me their SNMP strings, access to their network management system. That being the case, RMON and any other flavor of Flow would also be out of the question. Honestly, I hope a customer wouldn't willingly give out that kind of information or access to anyone.
Since my background is protocol analysis, I tend to gravitate to those tools that work from the packet level. Of course I know this isn't always possible, but I'll take whatever I can get. And as the old saying goes, "Packets don't lie".
In this article I am showing you a quick peek at Colasoft's (www.colasoft.com) nChronos product which basically captures packets and uses a slick GUI to control how you report on what it just captured.
The trick with all packet capture tools revolve around a few critical points:
- Make sure the packet capture tool can handle the flow of traffic it is monitoring. For example, in this video I used a laptop to monitor my internet link because I know it isn't a high speed link. I wouldn't use this laptop to monitor a 100 Mb, or greater, since the packet loss would be high.
- Understand your network topology and pick your monitor points carefully as well as decide how you intend to intercept this data. For example, do you use a tap, mirror/span or hub?
- Pay close attention to what the tool does with all those packets to make post processing easier. I have seen protocol analyzers that can capture 1 GB or data, but struggle to load the same trace file it just created.
I also use this tool to investigate what is causing the 2 Mb/s data stream and why my WiFi performance is subpar.
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https://www.youtube.com/watch?v=5y2haFycmak
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tool-calibration-packet-measurements
Tool Calibration: Packet Measurements
If you’ve ever seen me perform, um, I mean present, you will have heard me go on about tool calibration.
I cringe when I see analysts download some software, install it on their laptop and run off to fight a fire. The worst case scenario is you take what you believe to be good data and spend some time spinning your wheels. The best case scenario is that you use your laptop and software and get a feeling that the data doesn’t look right and figure out early in the troubleshooting process that you need another tool.
I’m always careful how I word or present this topic because some people take this the wrong way and interpret this as me slamming their favorite laptop or software tool. I find myself repeating the same message, “You need to know your tools’ limitation”.
In my 20+ years in the field I’ve met some pretty sharp analysts who totally get this concept and have gone the extra mile by creating a dual boot environment for their work PC or having a dedicated support computer that no one is allowed to mess with.
With this video I thought I would tackle an old topic that come up every so often; Packet loss. I will add 2 other criteria as you will see later in the video. But the goal is to illustrate that just because your Ethernet connection says ‘1Gb’ there’s no guarantee that you will receive all the frames, nor are they guaranteed to have the correct timings. And of course, “Know your tool’s limitation”. You should be comfortable with your tools and use them to determine how to best use your laptops or software solutions.
In my lab I setup two Fluke Networks Optiview XG, my laptop with Wireshark, my USB docking station and a Profitap capture appliance to see how they fare.
Lovemytool Blog: http://www.lovemytool.com/blog/tony-fortunato/
Network Computing Blog: http://www.networkcomputing.com/author-bio.asp?author_id=2332
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https://www.youtube.com/watch?v=kyNccRu2D7I
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For those of you who do not use Wireshark regularly and just upgraded to version 4.0.0, you will notice the default layout has been changed from the ‘stacked’ view to the 1x2 display.
I figured I would show you how to put it back if you prefer the old format.
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https://www.youtube.com/watch?v=qkPNJBM7ySw
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1 month ago
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WI-FI
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Tons of more stuff at www.thetechfirm.com
Dont forget to subscribe....
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I have received a lot of emails expressing interest in Wi-Fi site surveys. Everything from outdoor point to point, factories and of course, office environments.
I thought I would start with a brief overview and then put out more specific articles later.
What I found interesting about the emails I received was the common theme where people said “I just want to figure out how to do it without getting bogged down with the technical stuff.”
In this and the following videos, I will focus on how to do it, tips and tricks along the way. I agree that a lot of people get paralyzed with fear because they think they have to over analyze everything from the get go.
Enjoy the first video and keep the feedback coming.
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https://www.youtube.com/watch?v=p7QvyDr1OZE
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tons of info at www.thetechfirm.com
In this example I use my Cisco 2940 and some mirror commands to capture data from my Dlink ATA.
original video https://youtu.be/af4d_fAkwAY
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https://www.youtube.com/watch?v=C9dh0AxI1WE
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Linkedin Profile http://ca.linkedin.com/in/fortunat
Lovemytool Blog: http://www.lovemytool.com/blog/tony-fortunato/
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One of the most critical and time consuming tasks network technicians perform is the simple task of determine what port a host is connected to. Having to perform this work remotely makes this even more challenging.
Regardless of the reason, this task affects areas of networking ranging from design, implementation and support.
From the design angle, you need to know how many ports are in use and which devices are connected. When working on replacing network equipment, it is imperative to get an accurate inventory of port connections. In some cases you can disconnect empty ports, or order equipment with more ports if you are running low. In other situations you might want to move some connections around so this information is helpful.
When it comes to implementation, I like to have a print out of what is connected. A print out is important since the server and network may not be available during your installation.
Now we are down to support which is fairly obvious. Having the correct port number is critical when port mirroring or using a tap. The correct port is also required when monitoring with your favorite network management platform.
read the rest of the article at http://www.networkcomputing.com/author-bio.asp?author_id=2332 when its posted
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https://www.youtube.com/watch?v=x9cewpadWZs
Transaction
Created
1 month ago
Content Type
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