I don't know that I'd equate camouflaging a tank to switching ports. nmap and other tools will already identify services on different ports, switching ports p

I don't know that I'd equate camouflaging a tank to switching ports. nmap and other tools will already identify services on different ports, switching ports protects you from the dumbest of the dumb robots and that's it. The cost of which is potentially more confusion on your network. The other cost if you have an IPS that is protocol aware, it may not work with your altered ports. I guess if you're only worried about script kiddies and robots then there is potentially some benefit. If you're worried about actually being attacked then it makes your life marginally more difficult (just a tiny bit more complexity) and it offers no security.