Snort really isn’t very hard to use, but there are a lot of command line options to play with, and it’s not always obvious which ones go together well. This file aims to make using Snort easier for new users. Before we proceed, there are a few basic concepts you should understand about Snort.📌📌Snort can be configured to run in three modes: 👓 Sniffer mode, which simply reads the packets off of the network and displays them for you in a continuous stream on the console (screen). 👓 Packet Logger mode, which logs the packets to disk. 👓 Network Intrusion Detection System (NIDS) mode, which performs detection and analysis on network traffic. This is the most complex and configurable mode.🔹 Key Functions of Snort:✅ Packet Sniffing – Captures and analyzes network packets.✅ Intrusion Detection System (IDS) – Detects suspicious activities based on predefined rules.✅ Intrusion Prevention System (IPS) – Blocks malicious traffic before it reaches the target system.✅ Log Analysis – Records detailed logs of detected threats.🔹 How Snort Works?1️⃣ Packet Capture – Snort collects network packets using pcap (Packet Capture Library).2️⃣ Preprocessing – Normalizes and categorizes packets to detect patterns.3️⃣ Detection Engine – Uses predefined rules and signatures to compare against incoming traffic.4️⃣ Action Execution:If a match is found, it can:✅ Generate an alert (IDS Mode)✅ Drop/block packets (IPS Mode)✅ Log the activity for analysis5️⃣ Logging & Reporting – Stores information in logs for administrators to analyze.🔹 Why Use Snort?✅ Free & Open-Source – No licensing cost.✅ Highly Customizable – Users can create and modify rules.✅ Lightweight & Fast – Efficient performance on low-resource systems.✅ Strong Community Support – Large user base and regular rule updates.✅ Integration with SIEM & Firewalls – Can be used with Splunk, ELK Stack, and Cisco Firepower.--_
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