OK, so my idea of building a house in the nether with bricks was smart after all.
Hm. Just wondering, but can ghasts break iron doors with their fireballs?
They can't even break glass, so no, don't worry.
I beg to differ, if you have watched coes quest. He mentions in one of his episodes that ghasts kept breaking his glass while he was putting it on his tunnel. Ghasts can break glass, but they cant see through it!