masscan is the fastest TCP port scanner. It can scan the entire Internet in under 6 minutes, transmitting 10 million packets per second.
It produces results similar to… 591 more words
Came across this post on the ISC diary (highly recommend keeping an eye there if you don’t already). The short version is that nmap can be used to detect any protocols that send broadcast packets (and are supported by packetdecoders.lua): 92 more words