Palace won 3-1 thanks to an Ismaila Sarr double and Maxence Lacroix's goal.
Glasner remarked afterwards on Palace TV: “A great atmosphere and a great European night here at Selhurst Park. It was a very good result, important result against a strong Alkmaar team, to be honest.
“But that’s what we expected. I think two years ago they played in the semi-finals of the Conference League, so they’re a good team, and we could see especially the first 10 to 15 minutes we looked a little bit surprised – we’d talked about it – about their intensity.
“Then after 10 or 15 minutes, we brought the game more into their half, more into the final third. And I think in the first-half, then we dominated with our physicality, with set plays. And even after we missed the penalty, we really stayed focused and strong.
“It looked at the beginning like a typical Conference League game – like last time against Larnaca, missing chances. But today we did really well to show resilience and always keep going. That's what I liked, and that helped us.
“We had, I think, a deserved lead at half-time. We spoke about it – I think we could have done a little bit better with our front three, they pressed us man-to-man, we didn't have really good movements, we lost the balls a little bit too easily.
“In one situation we did it really well, JP (Mateta) protected the ball, and then we know we have the runs and then it was an excellent pass and a great finish of Isma – and then I think we controlled the game.
“A very important three points. Now, having six points looks good – and now it's focus on Brighton (on Sunday).”