It's pretty easy to use, although I think the interface sucks.
There's also an advanced mode for advanced users, not bad at
all.
But one thing, if you accidentally block something, you will find
it a headache to unblock. I did that, and I can't unblock.
Uninstalled it.
My preference is towards Sunbelt Kerio, but that one is more for
advanced users. It works a lot like Sygate (gone after being
brought by Symantec).