McClaren said: “We have five games left and four of them are at Wembley.
“We’ve already shown that Wembley can be a fortress.
“We have looked a team over the last few performances. It’s in our hands – if we win our games we’ll qualify.”
He added: “We knew before the game it was going to be tough – we warned the players and warned the people.
“They kept going to the end, even when they were 3-0 down. They have great spirit.
“We competed and we knew eventually they would tire. We got that first goal and then the rewards came in the second half.
“We’ve gained a lot over the last two and a half weeks. Friday gave us a lot of confidence and belief which we showed tonight.”