The 3rd edition of this book will have you confidently using Wireshark to solve the kind of problems you're likely to run into. You'll be capturing and analyzing packets, understanding network protocols, and gaining important insights into what's happening on your network.
The overall equation is pretty simple: If you want to understand network traffic, you really should install Wireshark. And, if you really want to use Wireshark effectively, you should consider this book. Already in its third edition, Practical Packet Analysis both explains how Wireshark works and provides expert guidance on how you can use the tool to solve real-world network problems.Yes, there are other packet analyzers, but Wireshark is one of the best, works on Windows, Mac, and Linux, and is free and open source. And, yes, there are other books, but this one focuses both on understanding the tool and using it to address the kind of problems that you're likely to encounter.To read this article in full or to leave a comment, please click here
The overall equation is pretty simple: If you want to understand network traffic, you really should install Wireshark. And, if you really want to use Wireshark effectively, you should consider this book. Already in its third edition, Practical Packet Analysis both explains how Wireshark works and provides expert guidance on how you can use the tool to solve real-world network problems.Yes, there are other packet analyzers, but Wireshark is one of the best, works on Windows, Mac, and Linux, and is free and open source. And, yes, there are other books, but this one focuses both on understanding the tool and using it to address the kind of problems that you're likely to encounter.To read this article in full or to leave a comment, please click here
The overall equation is pretty simple: If you want to understand network traffic, you really should install Wireshark. And, if you really want to use Wireshark effectively, you should consider this book. Already in its third edition, Practical Packet Analysis both explains how Wireshark works and provides expert guidance on how you can use the tool to solve real-world network problems.Yes, there are other packet analyzers, but Wireshark is one of the best, works on Windows, Mac, and Linux, and is free and open source. And, yes, there are other books, but this one focuses both on understanding the tool and using it to address the kind of problems that you're likely to encounter.To read this article in full, please click here
Getting work done faster on the command line is one of the never changing goals of Unix sysadmins. And one way to do this is to find easy ways to reuse commands that you have entered previously – particularly if those commands are complex or tricky to remember. Some of the ways we do this include putting the commands in scripts and turning them into aliases. Another way is to reissue commands that you have entered recently by pulling them from your command history and reusing them with or without changes. The easiest and most intuitive way to reissue commands is by using the up and down arrows on your keyboard to scroll through previously entered commands. How far back you can scroll will depend on the size of your history buffer. Most people set their history buffers to hold something between 100 and 1,000 commands but some go way beyond that. Hitting the up arrow 732 times might try your patience, but there are are fortunately easy ways to get what you need without wearing out your finger tip! To make this post a little easier to follow, I'm using a modest HISTSIZE setting. You can view your Continue reading
Looking back after spending more than 30 years as a Unix systems administrator, I have to say that's it's been quite a ride.It certainly wasn't 30+ years of doing the same thing. Instead, the technology and the job have gone through incredible changes along the way. There were dramatic improvements in the hardware that I managed and always plenty of new tools to learn and use.[See also: 18 cardinal rules of systems administration ]Over the years, I went from reveling in how much work I could get done on the command line to grappling with some big issues -- troubleshooting some very complicated problems and figuring out how to best protect my employers' information assets. Along the way, I worked with some amazing individuals, got laid off (once), and learned a lot about what works and doesn't work both from a technical and a career perspective.To read this article in full or to leave a comment, please click here
Looking back after spending more than 30 years as a Unix systems administrator, I have to say that's it's been quite a ride.It certainly wasn't 30+ years of doing the same thing. Instead, the technology and the job have gone through incredible changes along the way. There were dramatic improvements in the hardware that I managed and always plenty of new tools to learn and use.[See also: 18 cardinal rules of systems administration ]Over the years, I went from reveling in how much work I could get done on the command line to grappling with some big issues -- troubleshooting some very complicated problems and figuring out how to best protect my employers' information assets. Along the way, I worked with some amazing individuals, got laid off (once), and learned a lot about what works and doesn't work both from a technical and a career perspective.To read this article in full or to leave a comment, please click here
I was excited to see what Double Robotics has accomplished with their telepresence robot, especially when one showed up on an episode of The Good Wife. Double Robotics’ device (see http://www.doublerobotics.com/) is making it possible for teleworkers to have their “doubles” moving around the office, chatting with staff, and attending meetings. The devices works like an iPad on a Segway, though the stand/roller part of the setup is much lighter and slimmer than a Segway, so it’s more like an iPad on a rolling stick. But the movement is controlled remotely and the person controlling it has a sense from their screen of moving around the office and interacting with the staff because their “double” really is.To read this article in full or to leave a comment, please click here
Sandra Henry-Stocker