The Reds have been given a favourable draw in the UEFA Champions League for the quarter finals.
However, Klopp believes Porto present a real threat that should not be taken lightly.
"What can I say? It's Porto and we've played there already and we know how good we had to be last year," he told the club's official website.
"The result in the end was a strange one; it was very good for us, of course, but it was a strange one. In the second leg, we saw the character of Porto and the quality they have.
"I could not be further away from thinking it's the best draw because it isn't – it is just the draw, it's the opponent we have to prepare for and that's all we will be thinking about from when we start preparing for the game.
"We have a specialist for Porto in our own team in Pep Lijnders being there in the past – and he always speaks with so much respect for that club. We will have plenty of information and that's what you need before a game, but you still have to play it. Now we know it, let's prepare."