Browse by Tags

Browse by Tags
  • Blog Post: Part 1: Poor Man’s Expert Using Excel – Top Users

    One item we are evaluating for future versions of Network Monitor are experts. These are the tools that among other things, allow you to get a high level view of a problem. But using a simple new feature in the released version of NM3 will allow us to do some simple expert-like analysis. Cut and Paste...
  • Blog Post: Color Filtering Error Messages

    Color Filters in Network Monitor are a simple way to make frames stick out in a trace. Dealing with large traces often makes it difficult to see important information. The sea of data represented by network traffic becomes a difficult backdrop to catch errors that occur. This blog will focus on creating...
  • Blog Post: Understanding HTTP Flow with Netmon 3 - By Yuri Diogenes

    1. Introduction One of the most common protocols that we need to deal with these days is the HTTP Protocol. This is not only a privilege of Internet users, there are a lot of Intranet users that also use this protocol for internal transactions. This post will show how to use Network Monitor 3 to...
  • Blog Post: Windows Phone 7 Connectivity Issues and Smart Potato

    Smart Potato is an application that allows you to access and manage your Media Center recordings and stream recorded TV. But when I first attempted to test this out on my phone, it complained that it could not reach the server. Detailed below is how I used Network Monitor to troubleshoot this issue....
  • Blog Post: Using Columns and Properties

    You might have had an occasion to add a new column in Network Monitor 3.0. But the list of available choices might be quite daunting. What you may not know, however, is that the list is derived from properties in the NPL script that makes up each parser. This means you can add any kind of information...
  • Blog Post: Follow the Stream

    This is not some existential trip or search for life's meaning. Rather this refers to a feature protocol analyzers use to narrow down traffic in a network trace. I mentioned this briefly in my Cable Talk Blog back on November 15 th , 2006. In fact you should refresh your memory as we'll refer to topics...
  • Blog Post: Top Users Expert for Network Monitor 3.3

    One of the major new features in Network Monitor 3.3 is the ability to run experts directly from the UI. And now NMTopUsers is available from our Experts Portal . Plus as it's a CodePlex project, we have opened the source code as well. It's a fairly simple C# project which uses the NMAPI to access data...
  • Blog Post: Intro to Name Resolution

    You sit down at your computer and attempt to connect to your network resource Du Jour (website/ server/application) and it just doesn’t want to work this morning. I’m sure this has happen to you more than a few times. And if you are a support or help desk professional, multiply that by a 10. What’s interesting...
  • Blog Post: Network Monitor Fields and Properties

    Collected here are a list of the most common data fields and properties. They are categorized by protocol. This list is helpful for getting an idea of the most common data fields and properties with descriptions of what they do. The list will continue to grow as we add new propreties, indetify helpful...
  • Blog Post: Broadcasts

    We can categorize traffic into two general types; directed and broadcast traffic. In the most general sense, a broadcast is sent to anybody that wants to listen. What I’d like to talk about is how broadcasts work and what they are used for. How broadcasts work In general a broadcast is a special...
  • Blog Post: Trouble Shooting Name Resolution with NM3

    Using the previous blog on “Intro to Name Resolution” we should have a basic idea of what is supposed to happen when a name needs to be resolved. Now let’s discuss how you’d use Network Monitor to determine where the problem is when connecting to your network resource. But let’s first list out some general...
  • Blog Post: NMCap: the easy way to Automate Capturing

    OK, I'm not going to blow smoke up your Async port. I don't mean to say that the NMCap is necessarily easy to use, though it's not that hard. But any command line utility always has its quirks. Isn't that why GUI was invented? What NMCap does make easy, is automating how you get your captures. And...
  • Blog Post: Reassembly Made Easier

    By using our latest 3.4.2455 release of the parsers and using a simple filter, you can now view reassembled traffic more easily for certain protocols. Normally when you reassemble a trace you see all the original frames plus the newly inserted reassembled frames. Using a filter with a brand new property...
  • Blog Post: NM3 One Click Capture Tool

    Wish you could get a network capture from a computer with no capture software installed? Wish you could have a network traffic "flight recorder" on a USB key? Here's your answer!" The motivation behind creating this tool was to provide an extremely simple way to get a trace from an end user. And the...
  • Blog Post: Intro to Filtering with Network Monitor 3.0

    Challenges of Filtering One of the biggest changes between NM2.x and NM3.0 is the way you do filtering. Old NM2.x hacks may be challenged by the loss of the UI wizard to build filters. On the other hand, Ethereal users may be pleased and further encouraged by the built in intellisense, but more on...
  • Blog Post: Conversations in Network Monitor 3.0 – Cable Talk

    Conversations for network protocols have been around for ages. But protocol analyzers have not been built to take advantage of them in the way NM3 does. Using the conversation tree and filters that reference conversations, make NM3 a powerful ally when trying to narrow down traffic. It's important...
  • Blog Post: Reducing Dropped Frames with Network Monitor 3.4

    by Darren J. Fisher – Network Monitor Development Lead Capturing network traffic is actually a very stressful task for most computers. With modern networks, traffic can arrive to a system at astounding rates. Most machines built these days have at least 1 Gbps network interfaces. When connected...
  • Blog Post: Reassembly with NM3

    Ever wonder how a network works? Maybe it just seemed so easy, and in your mind sending a file was just putting each byte on the wire to the receiving machine. That’s not too far from the truth but you’d be very selfish to think that the network was there for your bidding only. Since a network has to...
  • Blog Post: Part 2: TCP Performance Expert and General Trouble Shooting

    Performance issues are one of the more difficult problems to trouble shoot. Without a baseline, it's often hard to determine if something is really slower. But TCP does contain some built-in behavioral patterns that can be used as a signal to tell you something may be wrong with your network. So the...
  • Blog Post: New Videos for Advanced Filtering and 3.4 UI Features

    You folks have been asking for updated videos about filtering and now I’ve made two more available. These include information about filtering with properties to understand how to access TCP and SMB values that don’t appear directly on the wire. We talk about operands and how to filter out traffic you...
  • Blog Post: Measuring Response Times

    It's often useful to understand how long it takes for a request to get responded to. This helps you gauge how well a client or server is keeping up. This type of measurement can also be done at different layers; however there are some tricks you'll have to learn. FrameVariable.TimeDelta In order...
  • Blog Post: NM3 TV – Video Help for using NM3

    If a picture is worth a thousand words, than a video must be worth, …30fps * 1000 * …uh…ok…, like a whole lot. So this blog is going to be devoted to providing short help videos to help understand how to use the features of NM3. My original intention was to provide a...
  • Blog Post: Wireless Capturing With Network Monitor 3.1

    One of the exciting new features in NM3.1 is the ability to capture wireless network data and management packets on Vista. This new feature provides Network Monitor a useful tool for trouble shooting wireless problems. What do you mean, wireless Management packets? With the introduction of NDIS6, we...