Security

Keeping your Windows PC Software Up to Date in 2026

Views: 2,390One of the challenges of owning and maintaining a Windows PC has always been keeping the operating system, installed applications, device drivers, and other software up to date. I originally wrote this article back in September 2013 and made a few updates in 2020. A lot has changed since then! Fortunately, keeping software updated

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Configuring Windows Firewall Rules using netsh

Views: 29,943Windows Firewall allows you to control the traffic entering and leaving your system through various rules. You can create and configure firewall rules to permit or block specific network activities. If you are looking for a more complete curated and advanced set of examples – join our Patreon community and check out the posting

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CSI-HO-018-B – Hands On Advanced IPv6 Security

Views: 12,923Advanced IPv6 Vulnerability Analysis, Security Testing, Attack Recognition, and Mitigation 2-Day Instructor-Led Hands-On Lab CourseAvailable in Web-Based or On-Site delivery.Minimum 10 students – Maximum 16 students Course Description IPv6 security requires more than applying existing IPv4 security practices to a larger address space. IPv6 introduces protocol behaviors, control messages, addressing methods, Extension Headers, host-configuration

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CSI-HO-006 – Hands-On Advanced IP Networks/Protocols

Views: 22,458Advanced OSPF, IPv4 Quality of Service, Network Security, IPSec, Encryption, and TCP Analysis 2.5-Day Instructor Led Hands-On Lab ClassAvailable in either Web-Based Delivery or On-Site DeliveryMinimum 10 students – Maximum 16 students Course Description Understanding the fundamentals of Ethernet, IPv4, TCP/IP, addressing, subnetting, and routing is essential—but network engineers and technicians responsible for operating

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Zero-Trust Networking & Converged Security

Views: 2,173The following is a technical SWOT analysis for Network Engineers, Security Engineers, and Senior Technicians. I apologize for the high number of acronyms used below, but hey, this is networking! In networking, Zero-Trust is not a single product or control. It’s an architecture and operating model where no network location (LAN, WAN, data center

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MPLS – The Most Secure without Encryption

Views: 2,997Let’s just start right out and say: contrary to the scare tactics made by some, that MPLS traffic has been exposed by the providers that operate MPLS, there has never been any validated evidence that such a breach has indeed ever occurred, other than some alleged errors in configuration. MPLS operates between L2 and

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Is Wireshark a Red Team or Blue Team Tool?

Views: 3,212Great question. In one sentence it is a purple tool, meaning both! Wireshark itself is a passive tool, it is non-intrusive — it doesn’t create attacks — but it’s a force multiplier for both Red and Blue Teams depending on who controls the capture point and how the data is used. Let me dig

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Implementing AI in Network Automation While Maintaining Human Expertise

Views: 4,834As a follow on to my article on whether AI can be used in Networking, this post dives in deeper to a question of will humans still be involved? And if so, how do we upskill that human expertise? To successfully integrate AI into network automation while ensuring human expertise is maintained, organizations and

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What are some examples of Physical Layer Threats in Networking?

Views: 6,529A great question in my two day Security class recently. The physical layer (Layer 1) of the layered model is responsible for the transmission of raw data bits over a communication medium. Although it is often considered more secure due to its reliance on physical components, it is still vulnerable to a variety of

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What was the nature of the July 2024 CrowdStrike computer outages?

Views: 2,707I 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

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Why are NAT/NPAT not a security function?

Views: 5,095Network 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

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View Historical Web Pages with Wayback!

Views: 10,165Let’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

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