Core Concepts:
Secure configuration of network devices like routers, switches, and firewalls
Understanding and applying network security mechanisms such as IDS, IPS, VPNs, and proxies
Techniques for scanning and enumeration including port scanning, banner grabbing, and OS fingerprinting
Tools:
Nmap, Netcat, Wireshark, pfSense, Snort
Project:
Simulate a network environment and perform active scanning using Nmap and Netcat to identify open ports, grab banners, and detect the target operating system. Secure the network using basic firewall and VPN configurations.