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Tech Tips

Tech tips and tricks to help you.

Meltdown – How much will your CPU be affected?

Meltdown – How much will your CPU be affected?

Software, Tech Tips
Meltdown and Spectre were a hot topic this week for anyone who uses a computer. That would be a huge number of affected systems mainly because Intel chips were highlighted as having a design flaw (apparently for many years) that presents a “potential” Security weakness that could be capitalized on for some malicious activity. ARM and AMD chips also are identified as having the same or similar problems. The issue is how the CPU passes control to the kernel operations, then takes control back. Speculative execution is used to increase performance, but due to the CPU vulnerabilities, sensitive data may be exposed. Meltdown affects the isolation between applications and the operating system. This requires hardening the system against any exploits that could leverage these vulnerabilities. Anyw...
Nigel’s performance Monitor for Linux (nmon)

Nigel’s performance Monitor for Linux (nmon)

Tech Tips, Software
Linux has many available tools that simply just work. That’s why I prefer it over other operating systems. I can get things done, usually faster and much simpler from a command line in a terminal, or multiple terminals. Windows has useful and powerful shells, and I use them when I need to work on that OS, but I prefer to work in bash. I make use of simple, but elegant installation applications, most notably Apt and PacMan - depending on which of my two preferred distros I have installed. I can install simple, but powerful tools to pull out information about my system’s operation and performance. nmon: One of my goto tools is nmon. (Nigel’s performance Monitor for Linux) - originally used by IBM and released as open-source in 2009. I wouldn’t categorize “nmon” as old school, but it sure h...
Linux type solutions on Windows

Linux type solutions on Windows

Tech Tips
The “Microsoft” Ubuntu command line “App” Sometimes you find yourself working on a Windows-based machine, have to perform a quick task that might normally be very straightforward on a LINUX machine, and you don’t want to spend too much time fumbling through the GUI pointing and clicking until you stumble across what you’re looking for. My first gut instinct usually is to get to the command line quickly and work from there. I installed the “Microsoft” Ubuntu command line “App” on a Windows 10 test machine recently hoping it would become the perfect solution to such situations, but it has been a disappointing experience so far. Maybe I’ll have a better opinion after I spend more time with it, but I doubt I’ll see this installed on too many machines I run into – at least for a while. Luckily ...
Implementing a Raspberry Pi into a small business

Implementing a Raspberry Pi into a small business

Hardware, Software, Tech Tips
Raspberry Pi Project Abstract: Technology has become a complex beast for businesses to handle in the modern age. Especially small businesses that rely on technology for their daily workday. Businesses tend to think that complex systems are better than a simple solution. That is not always the case; often simple solutions can cut costs and produce benefits. A great example of this would be a Raspberry Pi computer. Utilizing a Raspberry Pi as a database and web server for a small business is a simple solution that has greater benefits than trying to run a complex solution where other companies are required to provide a service. Such benefits include the low cost of operation, control, and security of business information. To be able to build a Raspberry Pi capable of this task will require ...
Windump (back to basics)

Windump (back to basics)

Tech Tips, Software, Windows
Sometimes I like to go back to the basics, for network troubleshooting a good packet analyzer is what I need. I use Wireshark and Tshark if I can, but sometimes I get everything I need out of TCPDUMP. Sometimes I find myself staring at a Windows machine and not at a Linux command line. No problem, Windows has a couple of useful shells to work with, and it can run something very very close to TCPDUMP. So, if you are also looking for a simple alternative to Message Analyzer, Wireshark, or Tshark than WinDump – (a port of LibPcap ) may be just what you’re looking for. If you are familiar with TCPDUMP on Linux or UNIX than you will find WinDump works very much the same. Download windump here verify your download: SHA1: d59bc54721951dec855cbb4bbc000f9a71ea4d95 MD5: 7b50683722d9efd3dccbb9e65e...