There is an obfuscation technique where a server simulates nearly all ports to be opened, ideally simulating valid service signature on most of these ports.

Portspoff, for instance, implements this approach and handles more than 8000 service signatures.

There is an obfuscation technique where a server simulates nearly all ports to be opened, ideally simulating valid service signature on most of these ports.

Portspoof, for instance, implements this approach and handles more than 8000 service signatures.