How long would it take you to do basic hardening and iptable writing of a debian server?

Nothing special, just curious as to the average time that would take?

EDIT:// I'm asking because I was talking to someone who does residential computer support ( the kind that advertises in the back of neighbourhood newspapers and comes to your house and does computer 'checkups'). Anyhow, as more and more non-technical people start using decentralised services like statusnet, pump.io, etc. and setting up servers at home I suggested basic server hardening is a service he should learn and be offering (but not if it would take all day obviously). It took me a couple days to set up my server so that I didn't have that creepy democoles sword feeling but that's cause I had to search out tutorials and stuff. So, I was just looking into how long it takes professionals in practice.

Thanks for all your responses :)