Firewalls act as gatekeepers, filtering traffic based on set security rules. Bypassing them typically involves making malicious traffic look completely normal: Protocol Tunneling:

Many low-interaction honeypots simulate open ports but fail to complete full, complex 3-way TCP handshakes or process full application-layer commands properly. System Fingerprinting:

. Ethical hackers study these evasion techniques not to cause damage, but to simulate realistic attacks, expose blind spots, and help organizations fortify their infrastructure.

An IDS inspects inbound and outbound network traffic for suspicious activities and known threats. Attackers use several methods to bypass these checks: TrustEd Institute Packet Fragmentation: