Blog
Technical notes and articles on networking, security, and web development.
Step-by-Step: Monitoring Wi-Fi Networks and Capturing a Handshake with airodump-ng
How do you survey and monitor nearby Wi-Fi networks, and actually test your own Wi-Fi password's strength? A guide to airodump-ng from the aircrack-ng suite.
8 min readWhat Is CCNP, and How Is It Different from CCNA? A Complete Guide to the Advanced Cisco Path
After earning CCNA, what's the next step? A complete guide to the CCNP certification, how it differs from CCNA, and who should pursue it.
6 min readWhat Is OSPF, and Why Is It the Most Important Enterprise Routing Protocol?
How does OSPF let routers find the best network path themselves, with no manual configuration? A conceptual look at the most important dynamic routing protocol.
6 min readIntroduction to the Metasploit Framework: Structure and First Practical Steps
How does the world's most popular penetration-testing framework actually work? An introduction to msfconsole, modules, and running your first scan in a lab environment.
8 min readStep-by-Step: Capturing and Analyzing Network Traffic with Wireshark
What exactly is flowing across your network cable, right now? A complete guide to capturing, filtering, and analyzing packets with Wireshark.
7 min readStep-by-Step: Crafting Custom Packets and Testing Firewall Rules with hping3
When a regular ping doesn't give you enough answers, hping3 comes in — a guide to crafting custom TCP packets to see how a firewall actually behaves.
7 min readStep-by-Step: Scanning Networks and Discovering Open Ports with Nmap
The first tool every pentester learns is Nmap — a complete guide to network scanning, service and OS detection, with real commands.
8 min readStep-by-Step: Configuring HSRP for Gateway Redundancy on Cisco (CCNP Level)
What happens if the router acting as the default gateway for an entire VLAN fails? A complete guide to HSRP for automatic gateway redundancy.
7 min readStep-by-Step: Configuring Single-Area OSPF on a Cisco Router (CCNP Level)
Instead of manually defining every route, how do routers find the best path themselves? A complete guide to Single-Area OSPF with real Cisco IOS commands.
8 min read