Norvado Case Study - NetAlly

 

OVERVIEW

Norvado is Northwest Wisconsin's premiere local broadband technology provider. Founded in 1950, Norvado brings cutting-edge technology to Bayfield County, keeping communities connected, vibrant, and competitive with big-city offerings.

Measure-Command in PowerShell: The One-Line Script for Real-World Network Performance Testing

 If you want to see a Network person fall under their desk in the fetal position, ask them to write a script. 

Scripts can get complicated since you have to learn a programming language only to find out afterwards that you learned the ‘old not cool anymore’ language. Then you have to document the script using comments and flowcharts, etc…

Ok, let me show you a single Powershell command that you can write to impress your friends, family and maybe your colleagues. The command is Measure-Command {command}. And here is an example from my video Measure-Command {xcopy 113MB h:\*.* /Y}. Its pretty straightforward; Powershell will record how long it takes to complete whatever command you provide. 

In the previous example, it was a xcopy from my local drive to my h: network drive.

Top 10 Wireshark Filters (Chris Greer)

 

The filtering capabilities of Wireshark are very comprehensive. You can filter on just about any field of any protocol, even down to the HEX values in a data stream. Sometimes though, the hardest part about setting a filter in Wireshark is remembering the syntax.

So below are the most common filters that I use in Wireshark. Please comment below and add any common ones that you use as well.

ip.addr == 10.0.0.1
[Sets a filter for any packet with 10.0.0.1, as either the source or dest]

Crossing the 10 Million Mark: DDoS Attacks in 2020 ( Richard Hummel, Carol Hildebrandon)

DDoS Attacks in 2020

Not all world records are cause for celebration—just look at the DDoS attack numbers from 2020. For the first time in history, we observed more than 10 million DDoS attacks in a single year, with NETSCOUT’s ATLAS Security Engineering and Response Team (ASERT) observing 10,089,687 attacks over the course of the year. That’s nearly 1.6 million more attacks than 2019’s count of 8.5 million.

A Quick Note About TCP Sequence Numbers

I’ve received a lot of feedback from my readers expressing their gratitude that my articles/videos are short and to the point. To those people who took the time to send their feedback, thank you.

One topic that I’ve been asked to cover lately is TCP sequence number analysis. There are many videos out there that are very good. I know, since I watched quite a few of them ;)

After watching 4 or 5 of these videos, I noticed that they weren’t geared towards analysts getting into this level of analysis for the first time and missed a few items that I would have added. So here you go.