Final answer:
The correct answer is IP Fragment Scanning, where the TCP header is split into multiple packets to evade detection by packet filters.
Step-by-step explanation:
The correct answer is IP Fragment Scanning. This technique involves splitting the TCP header into multiple packets, making it difficult for packet filters to detect the intentions of the packets. When a TCP header is split into fragments, each fragment contains only a portion of the TCP header information, and the complete header can only be reassembled at the receiving end. This fragmentation can help evade detection by packet filters since the full TCP header may not be present in any single packet.