Why not also include the IANA link:
https://www.iana.org/assignments/service-names-port-numbers/...
mdqs 666 tcp
mdqs 666 udp
doom 666 tcp doom Id Software [ddt] [ddt]
doom 666 udp doom Id Software [ddt] [ddt]
Most people will get a chuckle, but I suspect laymen and even Christian zealots will throw a fit.
Like when a normal person gets an error on their screen and it prints “process closed: child killed by parent”. It will probably raise an eyebrow at the very least, lol.
Just my .02c :^)
Edit: casing
No doubt.
I was once, back at university so two and a half decades ago, helping someone with accessing stuff on a Unix server (he was not much computer literate at all). He was ahem rather enthusiastically Christian, and unsettled by seeing 666, thinking we'd set it up and were having a jab at him (which, in fairness to his paranoia, some of us might have done).
Those files were on a shared resource so shouldn't have been world writable, or even group writable for that matter, so we did report it (the directory wasn't writeable to me, so I couldn't fix it for them), but not because of the concerns our devout compatriot had!
See also: <https://web.archive.org/web/20040821031811/http://monster-is...> (that one is from 1999)
How many laymen are doing port scans, but also don't know to Google "port 666 doom" when they have a question?
I suspect the number is pretty small. Small enough to not really be a concern.