clarify compatibility with ufw about corridor HOT 2 CLOSED

I've never tried ufw.

from corridor.

I wonder if combination with ufw should be discouraged then?

I think unless one is intimate how ufw works, with its instructions on how it can be combined with other iptables rules, ufw is a recipe for disaster. It might either break what ufw is doing, or what corridor is doing, or even both.

ufw documentation on combining ufw with other iptables rules at https://wiki.ubuntu.com/UncomplicatedFirewall#Advanced_Functionality tells me, corridor and ufw cannot be easily combined.

//cc @HulaHoopWhonix

from corridor.