64 posts categorized "Sharkfest" Feed

Sharkfest 2018 - TCP Fundamentals Part 1 (by Chris Greer)

TCP is a huge component of the reliable delivery of applications. You are using it at this moment to access and read this article. You are probably using it to deliver most - if not all - of your business critical services on your network. 

But how does TCP "do it's thing?"

Why is the network often blamed even when a TCP-based problem is the real culprit? 

Understanding how TCP works will help network engineers of all experience levels to be better troubleshooters. It will help them fix slow networks, identify the root cause of application issues, and finally get answers to perplexing performance questions. This video, recorded at Sharkfest USA 2018 in Mountain View, California, gives an overview of the fundamentals of TCP. 

Sit back, grab some popcorn, and copy of Wireshark. Let's learn more about TCP! 

 

Author Profile - Chris Greer is the Chief Packet Head for Packet Pioneer LLC and a Certified Wireshark Network Analyst. Chris regularly assists companies in tracking down the source of network and application performance problems using a variety of protocol analysis and monitoring tools including Wireshark. Chris also delivers training and develops technical content for Wireshark and for several analysis vendors. Got packet questions? Let's get in touch!

Chris Greer Packet Pioneer Logo

 

 


2017 Sharkfest Europe - Why do vendors go to Sharkfest? (by The Oldcommguy®)

2017 SharkFest Europe

10 years of SharkFest

Cake

Learning from the Professional Analysts that come to Sharkfest!

Why vendor’s should be at every Sharkfest!

ProfiShark and long-term capture is an example of why Vendors attend Sharkfest!

SharkFest Europe conference was a success! This year, the Wireshark conference took place in Estoril, Portugal and it didn’t disappoint, as expected. For the Profitap team, the event meant lots and lots of inspiration and interesting insights about packet analysis, network troubleshooting and network forensics.

As a Vendor they attend to learn about trends and issues from the high quality of attendees at Sharkfest.

Hey mister “want to capture a LOT of data” Like all of your data and see every frame, when you need to?

Geoff and LaurantProfiTAP Team - Geoffrey Kempenich (left) and Laurent Schirck (right)

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Sharkfest 17 EU - First Thoughts (by Paul Offord)

That's it - another Sharkfest event done and dusted.  Janice and her team did a fantastic job, as always, and the venue was truly spectacular - think of 1930's opulence with a high tech twist and fantastic food.

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I was a bit of a late comer - I didn't arrive until midday on the penultimate day - but even so, I could tell it had been a good one.  With attendees from more than 30 countries it was a truly international event.  I was lucky enough to catch several good sessions, and here's a quick summary of some important points I learned.

First up was Kary Rogers.  I think his US session should be compulsory viewing ( see https://youtu.be/tyk2-0MY9p0 ), and the EU session was another tour de force.  He presents straightforward systematic ways of looking at TCP performance, using some Wireshark features I've never thought to use, all mixed in with a dose of comedy.  The EU session had some new stuff and if it becomes available on the Sharkfest Retrospective area, you are going to want to watch it.

Then I sat in on a session called Developer Bytes Lightning Talks–Development Track, hosted by Roland Knall.  There was some real nitty gritty dev stuff in the session, but

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Sharkfest 2017 - Winning the Network Blame Game (by Chris Greer)

This session was recorded at Sharkfest 2017 on June 19th at Carnegie Mellon University. 

This session was recorded at Sharkfest 2017 – June 19th at Carnegie Mellon University in Pittsburgh. It delves into the reasons why people blame the network for performance problems, why these issues linger, and how network engineers can solve them using Wireshark.

I hope this helps you in resolving those pesky network and application issues.

Chris Greer Packet Pioneer Logo

Author Profile - Chris Greer is a Network Analyst for Packet Pioneer LLC and a Certified Wireshark Network Analyst. Chris regularly assists companies in tracking down the source of network and application performance problems using a variety of protocol analysis and monitoring tools including Wireshark. Chris also delivers training and develops technical content for several analysis vendors. Got network problems? Let's get in touch

Lessons from Sharkfest US 2017 (by Chris Greer)

Sharkfest 2017

Sharkfest turned 10!

Last month, hundreds of Wireshark users, developers, and trainers came together for the 10th annual Sharkfest conference at Carnegie Mellon University in Pittsburgh. Packet-heads from all over the globe could mix and mingle with the likes of Gerald Combs, Laura Chappell, Jasper Bongertz, and Hansang Bae, just to name a few.

For me, Sharkfest is always a highlight of the year. Where else can you ditch the trade-show marketing super-hype and just get down to the wire with the world’s best packet analysts? Network engineers should definitely put this event on their bucket lists, no matter what their experience level with Wireshark and packet analysis.

In recent years, the fine folks who host Sharkfest have approved of having the sessions recorded, making them available on demand. If you have not yet done so, stop by the Sharkfest retrospective page to check out some of the sessions – sharkfest.wireshark.org/sf17

Suggested sessions:

  1. Hansang Bae always does a great job of showing real-world scenarios of how to packet dig. In his session he goes into some case studies of rare packet-level issues that engineers face today. His session video is not yet on the page but I’m sure it soon will be.
  2. Kary Rogers from Packetbomb did a practical session on Understanding Throughput and TCP Windows. Be sure to check that one out – recording available.
  3. Betty DuBois did a very nice session for newbies entitled “Rookie to Vet in 75 minutes”. Although the session recording is not yet available, she did an awesome job on her presentation – definitely check it out!

My notes:

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