Ferdinand, captain for the night in the absence of Patrice Evra, was all smiles at the final whistle, although he acknowledged the Reds' performance was far from vintage.
"It was a good result," he told manutd.com. "I think before the game we would have taken 2-0 had you offered it. To come away with a victory and a clean sheet was pleasing.
"It wasn't one of our best performances, but sometimes you get that. In this type of tournament, in the knockout stages, the result is the most important thing."