Explore the world of networking with expert insights on routers, switches, and firewalls. This category is your go-to resource for troubleshooting tips, configuration guides, and practical skills to optimize and secure your network. Whether you’re a beginner or a seasoned IT pro, find step-by-step solutions to keep your systems connected and running smoothly.
Comparison Table of Public DNS Providers DNS Provider Primary DNS IPs Filters DNSSEC DNS over TLS (DoT) DNS over HTTPS […]
Best Public DNS Providers in 2025: IPs, Features, and Security Compared Read Post »
Torrenting is a double-edged sword. It’s a popular way to grab large files fast, but it’s also a hacker’s playground
How to Get Hacked Downloading Torrents – A Deep Dive into Malware Analysis Read Post »
Network issues can be a real headache—slow connections, dropped signals, or mysterious glitches that leave you scratching your head. That’s
Top 25 wireshark filter Read Post »
The shape average command in a policy map limits traffic to a specified rate, smoothing bursts using a token bucket
Understanding Shape-Average in Cisco QoS Read Post »
Quality of Service (QoS) is a critical tool for managing network traffic, especially on WAN links where bandwidth is often
Cisco Router QoS with Policy Map: Optimizing WAN Links for Better Performance Read Post »
FortiGate firewalls, developed by Fortinet, offer robust proxy capabilities through explicit and transparent modes, each enhanced by proxy chaining. This
Understanding Proxy Chaining in FortiGate: Explicit vs. Transparent Mode Explained Read Post »
DPD is not exclusively for NAT-T (NAT Traversal) traffic. DPD operates at the IKE (Internet Key Exchange) level and is
Is Dead Peer Detection (DPD) Only for NAT-T Traffic? Read Post »
Once got your CISSP—or you’re gearing up to tackle cybersecurity like a pro. Either way, it’s time to get technical.
20 things you have to know once you got CISSP Read Post »
What is Dead Peer Detection (DPD)? Dead Peer Detection (DPD) is a mechanism used in IPsec VPNs to determine whether
Deep into Dead peer detection and NAT-T of ipsec VPN Read Post »
I’ll explain each one step-by-step, structured logically to help you understand their purpose, how they fit into the IPsec framework,
What you should know about ipsec vpn? Read Post »
What Can a Hacker Do with a Reverse Shell? When the reverse shell connects back to the attacker, it’s like
What Can a Hacker Do with a Reverse Shell? Read Post »
A reverse shell is a crafty technique hackers (and ethical testers) use to remotely control a system. Unlike a typical
Understanding Reverse Shells: How They Work on Linux, Windows, and macOS Read Post »
We’ve hit an odd snag with our Palo Alto PA-820 firewall, which serves as the core of our IPsec VPN
IPsec VPN Instability on Palo Alto PA-820: A Multi-Site Mystery Read Post »
Just set up Cisco Secure Network Analytics (Stealthwatch) and wondering how to spot trouble in your network? You’re not alone!
Backdoor hacking tools are a type of malicious software or mechanism designed to provide unauthorized access to a system, network,
What are backdoor in cyber security? Read Post »
What is a Certificate? A certificate (specifically an X.509 certificate in the context of TLS/HTTPS) is a digital document that
What you should know about certificate? Read Post »
Overview of TLS 1.3 TLS 1.3 (Transport Layer Security version 1.3) is a cryptographic protocol that secures communication between two
What you should know about TLS 1.3, how it secure your data for web browsing? Read Post »
Transport Layer Security (TLS) ensures secure communication over the internet, evolving significantly across versions. TLS 1.1 (2006) introduced basic encryption,
Let’s dive into how the key exchange works in HTTPS, focusing on the interplay between asymmetric and symmetric encryption, and
Key exchange method in https Read Post »
HTTPS (Hypertext Transfer Protocol Secure) is HTTP layered over a secure protocol (typically TLS, or Transport Layer Security, formerly SSL).
What is HTTPS and how it works? Read Post »
What Are TCP, UDP, and QUIC? Before we compare them, let’s define each protocol: Now, let’s break down how they
What Are TCP, UDP, and QUIC? Read Post »
MTU (Maximum Transmission Unit) and MSS (Maximum Segment Size) are two important concepts in networking, particularly in the context of
What’s Nmap? Nmap (Network Mapper) is like a lazy guy’s spy kit—it scans networks, finds devices, and tells you what’s
Nmap for Network Scanning, for beginniner Read Post »
In the realm of application-layer security, two tools stand out: the Web Application Firewall (WAF) and the Layer 7 Firewall.
What you should know in WAF and Layer7 firewall? Read Post »
IPsec VPNs are critical for securely connecting distributed sites, such as a core office with a Palo Alto PA-820 firewall
How to Troubleshoot IPsec VPN Issues: Step-by-Step Guide for Palo Alto 820 Read Post »
In a previous analysis, detailed in The Curious Case of Deny Logs in Palo Alto SSL Decryption: A Troubleshooting Journey
Investigating PAN-273949: A Potential Resolution for SSL Decryption Deny Log Anomalies Read Post »
Let’s set up a lab to configure a Cisco VXLAN EVPN-BGP fabric with a spine-leaf topology, including normal leaf switches
Lab to configure a Cisco VXLAN EVPN-BGP fabric with a spine-leaf topology Read Post »
Let’s dive into setting up a Cisco switch using Python automation! This is a great way to streamline network configuration
Setting Up a Cisco Switch with Python Automation Read Post »
Ransomware attacks are on the rise, and one of the sneakiest delivery methods involves embedding malicious code in phishing email
Deep Dive into Ransomware Embedded in Phishing Attachments Read Post »
Introduction: The Hidden Danger of Node.js in Phishing Attacks Phishing emails are old news, but what if one tricked you
How Node.js Ransomware Sneaks Through Phishing: A Deep Dive for 2025 Read Post »
