Mike, a security engineer, was recently hired by BigFox Ltd. The company recently experienced disastrous DoS attacks. The management had instructed Mike to build defensive strategies for the…

Allowing unsafe C functions such as `gets()` and `strcpy()` introduces buffer overflow vulnerabilities and has no relation to wireless physical-layer jamming or scrambling defenses.

Permitting all addressed packet types at the ISP level expands the attack surface for network-layer DoS attacks and does not address physical-layer wireless interference.

Cognitive radios are software-defined radio systems that monitor the electromagnetic spectrum in real time and can autonomously switch operating frequency, modulation scheme, or transmit power in response to detected jamming or scrambling interference. Deploying them at the physical layer means the network infrastructure itself can react to and evade DoS attacks that target wireless signals before they impact upper-layer communications. This adaptive capability directly counters both jamming (intentional signal disruption) and scrambling (injection of noise or malformed signals) attacks.

Disabling TCP SYN cookie protection weakens defenses against SYN flood attacks and is entirely unrelated to countering wireless jamming or scrambling.