In the constantly evolving landscape of cybersecurity, attackers have developed increasingly sophisticated techniques to bypass traditional security defenses. Among the most commonly targeted systems are Intrusion Detection Systems (IDS), firewalls, and honeypots. These technologies play a critical role in identifying and preventing unauthorized access to networks, but when attackers successfully evade them, it can lead to significant breaches. Understanding the strategies used to bypass these mechanisms is crucial for both offensive security professionals and defenders aiming to enhance their system resilience. Firewalls serve as the first line of defense by filtering traffic between trusted and untrusted networks. Traditionally, web traffic would be filtered using basic rules such as blocking certain ports or protocols. However, firewalls have evolved over time. Packet-filtering firewalls inspect packet headers to enforce rules, such as blocking all traffic on port 22 to prevent SSH access. Stateful inspection firewalls go a step further by monitoring active connections,

1. Introduction to Evasion Techniques Evasion techniques are used to bypass security mechanisms like Intrusion Detection Systems (IDS), firewalls, and honeypots to carry out attacks without detection. Key Objectives: 1. Avoid triggering alerts in IDS/IPS.2. Bypass firewall restrictions.3. Detect and evade honeypots to avoid traps. 2. Understanding Firewalls Firewalls act as barriers between trusted and untrusted networks, filtering traffic based on rules. Types of Firewalls: Evasion Techniques: 3. Evading Intrusion Detection Systems (IDS) IDS monitors network traffic for suspicious activity. Evasion Methods: Practical Example: 4. Evading Honeypots Honeypots mimic real systems to trap attackers. Detection & Evasion Techniques: Practical Example: 5. Countermeasures Against Evasion For Defenders: Example Defensive Rule (Suricata IDS): Conclusion 1. Firewalls can be bypassed using fragmentation, tunneling, and encryption.2 IDS/IPS evasion involves obfuscation, slow attacks, and polymorphic code.3. Honeypots can be detected via behavioral analysis and fingerprinting4. Defenders must use advanced detection methods to mitigate evasion. Final