Cisco Packet Tracer Port 8001 ((link)) Review
When Packet Tracer runs on a host machine, it opens a local listening socket for inter-process communication (IPC) with the GUI. (e.g., Python API via pypi library). However, this is implementation-specific and not guaranteed in all releases.
: Security software often flags port 8001 as "non-standard" web traffic, requiring users to manually allow the application through their firewall. Troubleshooting "Port 8001" Errors cisco packet tracer port 8001