The -T2 flag in Nmap sets the timing template to "polite", which means that Nmap will limit the number of parallel probes to 10 and the scan delay to 0.4 seconds. This will reduce the number of connections per minute and avoid triggering the active response tool. The -Pn flag tells Nmap to skip the host discovery phase and scan the target regardless of its ping response. The other options are not suitable for bypassing the active response tool, as they either scan too many ports (-sU, -T5, -F) or use a faster timing template (-T5, -T3) that will generate more connections per minute. Reference:
* Nmap Cheat Sheet 2024: All the Commands & Flags - StationX
* Nmap Commands - 17 Basic Commands for Linux Network - phoenixNAP
* NMAP Flag Guide: What They Are, When to Use Them - CBT Nuggets