Like, share and subscribe to support my channel. Tons more info at www.thetechfirm.com ------------------------------------------------------------------------------------------ I’m one of those guys who looks at the Wireshark release notes. Release notes are usually about bug fixes and protocol updates but every so often it contains a gem. When Wireshark 4 came out, there was all sorts of chatter about new features, etc. After reading about the features, I soon realized that many of the features were helpful for more seasoned Wireshark users that would figure out or stumble upon them on their own. One display filter tip that I thought was helpful was a more efficient ability to search for multiple values. ... https://www.youtube.com/watch?v=EAljq9LAkDo

Getting Started Is The Tough Part Regardless if you are troubleshooting, baselining installing or designing getting accurate data is critical. We’ve all heard that old saying “garbage in, garbage out” but what about “no data, no chance”? When I present or teach I always try to instill some basic concepts to help attendees regardless of their role. The first point is “get off your chair”. When possible get off your chair and visit the site, or client, to get a proper perspective of the issue, site and gather first-hand information. In the day of video calling, and the ability to record video/photos from your phone, you can ask the client to ‘show you the issue’ or a walk around the site. The second point is to document! Document anything, tools used, methodology the switch make/model, ip addresses, port numbers, operating systems, etc… you would be surprised how helpful this information can be for you at a later date or for someone else working with you. No matter what you do, document or start with, just start with something. For example, I get many requests to help with application or device baselines. The first thing I ask is how do you want to baseline? There are many options; you can use the SNMP port stats of your switch to watch load/utilization, review firewall logs for port numbers used, if its windows or linux, look at netstat output, or lastly capture pack.... read the full article at www.networkdatapedia.com when its posted ... https://www.youtube.com/watch?v=eAM7xjhH_pk

Heres another slide from the Baselining session I had the other day. This time we were looking at application behavior. The point of this slide is not to get initially caught up with what could be causing the behavior, or if its bad or good. In this specific example, I used wget to see if an HTTP transfer behaved the same way as when the application performed the same HTTP GET. I kept every as consistent as possible: • Same source IP • Same destination IP • Same version of HTTP (1.1) • Same URL • Same approx. time of the day (5 minutes apart) During a real baseline I would want to get multiple traces/tests (5 if possible) to definitively prove if this is indeed a real pattern. After proving the pattern is consistent, you can make an observation, possible recommendations and then remeasure to see if it helped. ... https://www.youtube.com/watch?v=Qc9azidbesw

I thought this would be helpful to show since its so portable and about $25. I use this with my tablet, but have also used it for my laptop, etc.. Very helpful Blog: http://www.lovemytool.com/blog/tony-fortunato/ ... https://www.youtube.com/watch?v=F4JDp7sQrII