I am getting asked a lot about this. Below is mix of reporting and my take on what happened and what needs to be done. Just so we are clear: I have no secret inside knowledge or insight into the problems. But if you are looking for a clear explanation, read on. The recent CrowdStrike […]
What was the nature of the July 2024 CrowdStrike computer outages? Read More »
Network Address Translation (NAT) and Network Port Address Translation (NPAT) are not considered a security function because its primary purpose is to modify the L3 network address information in IPv4 packet headers and L4 port numbers of TCP or UDP while in transit. NAT and NPAT are not needed in IPv6 networking. NAT is primarily
Why are NAT/NPAT not a security function? Read More »
Someone asked the following “getting started” question on the Wireshark Discord site, and it prompted me to write this FAQ to help newcomers to Wireshark understand how to navigate the initial complexity of packet capture. Hi everyone! I’m new here and just downloaded wireshark for a Computer Comm class. I need to capture traffic sent
A Simple Capture and Filter Exercise for Wireshark Read More »
Asynchronous Transfer Mode (ATM) was once seen as a promising Layer 2 networking technology due to its ability to handle a variety of traffic types (voice, video, and data) with high efficiency and quality of service (QoS) performance guarantees. I spent several years working with and then teaching ATM courses to my fellow telecom engineers.
What ever happened to ATM (Asynchronous Transfer Mode)? Read More »
So many folks use Windows and they want to capture Wi-Fi traffic in Monitor Mode using their onboard Wi-Fi adapter, and, for those of us who have tried, we all know how problematic that is. The answer as discussed in my post here is to use an external adapter. So which adapter should I use?
A List of USB Wi-Fi Adapters that support Monitor Mode Read More »
The whois command is a tool commonly used on various operating systems, including Linux, MacOS, and Windows, to query databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address block, or an autonomous system. It can provide information such as the domain owner, contact information,
What is the ‘whois’ command? Read More »
Let’s say you wanted to view our site back in 2001. Could you do it? The answer is yes! That’s right, someone has been crawling the web called the Wayback Machine (https://web.archive.org). The Wayback Machine is a digital archive of the World Wide Web and other information on the Internet created by the Internet Archive,
View Historical Web Pages with Wayback! Read More »
In our prior article on companion tools for Wireshark (link), we provided a list of tools that network analysts, operations, maintainers or just curious people should consider. All these were stand alone tools. What about Internet/Web Browser based sites that you may find useful? This thought raises certain issues, like this scenario: the network is
Web Sites that can be Companion Tools to Wireshark Read More »
Wireshark is a powerful network protocol analyzer used by network professionals for troubleshooting, analysis, development, and education. Companion tools can enhance its functionality or help in related tasks. Here are some websites and tools that can be seen as companions to Wireshark: Each of these tools has its unique strengths and can be used alongside
Stand Alone Companion Tools to Wireshark Read More »
What is the NIST SP 800-183 Networks of ‘Things’ Guideline About?
What is the NIST Special Publication 800-183 About? Read More »
What is the ISO/IEC 27008 Information technology — Security techniques — Guidelines for the assessment of information security controls Guideline About?
What is the ISO/IEC 27008 Guideline About? Read More »
What is The NIST 800-171 Protecting Controlled Unclassified Information in Nonfederal Systems and Organizations About?
What is the NIST Special Publication 800-171 About? Read More »
What is The NIST 800-161 Supply Chain Risk Management About?
What is the NIST Special Publication 800-161 About? Read More »
This question comes up all the time, and the answers can be quite varied. Seems simple enough at first glance, right? But the problem is that things are not simple, especially in today’s networking. Here are some issues: Now there are a myriad of reasons any of these issues could exist. This article is not
How to discover what is on your LAN (IPv4 and IPv6) or WLAN Read More »
I have hesitated to write this article for – well – about 15 years! Why? Because I love Wireshark!! That said, I was asked this question in a recent class. I asked back, why? The individual said they were just curious and perhaps something had come out that was better or next generation. Seemed reasonable,
Alternatives to Wireshark Read More »
