Gufx firewall sufficiency
I'm pretty new to the world of Linux. Right now I use Ubuntu Desktop 14.04 Later down the road I plan to install LAMP to try to run a web server.
Generally speaking, I prefer GUI (as most people, I guess), though I have no problem with CLI (remember myself in 1990 with MS-DOS).
As a regular user I don't think I really need a firewall in Ubuntu. Sticking to installation defaults is fine by me. But as an admin of a web server, I would think that I'm gonna need something beyond the Desktop ed. defaults security-wise. I'm aware of IPtables, of course. But to me it seems a little bit too much to learn, too steep of a learning curve right now. Then there's ufw.
And a GUI front-end of it, which is Gufw. Here opinions vary. Some say, I must learn IPtables, others think that Gufw does its job fine.
So what I'm asking here is not just an OPINION, but also a reasoning behind it. Real life example maybe etc.