Keeping projection and spirits LOS to mage's body, How do you think this would work? Options

[Mordinvan]

Can ghouls (who are not otherwise magical) and other sentient dual natures do warding? Seems like that would be a good way for a group of non-feral ghouls to make a living, especially as it means working during off hours out of site of any other workers). Ghouls would work cheap, no?
(Even better if non sentient duals can do warding- they'd probably ward their lairs to prevent astral ambushes while they slept!)

I'm also pretty sure spirits can do warding, which means anybody who can conjure can throw up a LOT of wards.

Yes ghouls should be able to, they have magic attribute and can astrally perceive