# Network Security Assessment & Defense Implementation Guide
> Learn network security fundamentals: scanning with Nmap, traffic analysis via Wireshark, and implementing defenses with pfSense firewall and VPN.

Tags: network-security, cybersecurity, pfsense, wireshark, nmap-scanning, firewall-configuration, vpn-setup, it-security
## Network Security Assessment & Defense Implementation
- **Project Origin:** Amity University Online, Course: IHC – Practical Approach to Cyber Security.
- **Objective:** Analyze small office networks, demonstrate common attacks, and implement firewall/VPN defenses.

## Network Environment & Tools
- **Simulation:** VirtualBox / VMware for environment simulation.
- **Scanning:** Nmap used for host discovery and port identification.
- **Analysis:** Wireshark for packet sniffing and traffic flow monitoring.
- **Defense:** pfSense for firewalling and VPN implementation.

## Network Reconnaissance & Attacks
- **Scanning:** Performed information gathering to identify live hosts and open services to map potential attack surfaces.
- **Attack Simulation:** Demonstrated risks such as unauthorized port scanning, packet sniffing, and weak protocol usage where plain text data was visible.

## Security Implementation
- **Firewall (pfSense):** Configured inbound and outbound rules, blocked unnecessary ports, and restricted unauthorized access.
- **VPN Configuration:** Established a secure encrypted tunnel via pfSense to protect data in transit and secure remote connections.

## Key Outcomes
- Transitioned network from an exposed state to a secure, monitored environment.
- Confirmed that constant monitoring and encryption are critical for data confidentiality and integrity.
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