The 42-year-old was appointed as assistant to new manager Martin O'Neill earlier this month, replacing Giovanni Trapattoni and Marco Tardelli, and Keane was eager to move on from old arguments.
He fell out with the Irish Football Association during the 2002 FIFA World Cup, when problems with the training facilities and a subsequent run-in with manager Mick McCarthy saw him leave the squad.
"One of my strong points is that I'm happy to move on pretty quickly," Keane said.
"I have always wanted what's good for Irish football, the past is the past.
"People might see me as a threat or troublemaker, (but) I think Martin thinks I can help him. If I had any issues or any doubts I wouldn't be sitting here now."
"I'm not on a big ego trip, I am always there to try and help," he added. "(I will bring) experience, lots of knowledge, I set high standards and am very demanding.
"I don't settle for second best, that's part of my make-up.
"Players will enjoy working with me, I have played and managed at a decent level, and have lots to give the younger players coming through, particularly the midfielders."
