"While port knocking is really just another layer of obscurity, obscurity works really well on scattershot/random attacks." Thank you. Remember - security thr

"While port knocking is really just another layer of obscurity, obscurity works really well on scattershot/random attacks." Thank you. Remember - security through only obscurity is a bad idea, but additional layers of obscurity can be very valuable. Also remember: a typical port knock is a series of three ports that all have to be hit in a certain timeframe - for instance, 2000, 4000, 8000 - that's a big "keyspace" to brute force through at WAN packet speeds ...