Seems pretty reasonable, actually. Not as crazy as ATM Machine, since you can't have an ATM that isn't a machine, but you can have a Secure Shell that isn't sec

Seems pretty reasonable, actually. Not as crazy as ATM Machine, since you can't have an ATM that isn't a machine, but you can have a Secure Shell that isn't secure. Could also be a verb ("Guidelines [on how] to Secure Secure Shell") but even as an adjective it makes sense. "Guidelines to [a] Secure [setup of] Secure Shell" is a reasonable way to shorten that sentence, just like "Guide to [writing] Fast Java [code]" would be.