The position appears to be a win for White. To win the position White needs to bring their king. So the first step of a the winning plan is to put the white rook to f4. The position after a rook trade is easily winning for White, so Black's response would have to be to defend f7 from the 7th rank. For instance:
1.Ra4 Re2 2.Rf4 Re7
Now White can bring their king: 3.Kg2 Ra7 4.Kf3 Ra3+ 5.Kf2 (not 5.Ke4 and 5...f6! draws) Ra2+ 6.Ke3 Ra3+ 7.Kd4 Ra4+ (7...f6 now allows 8.Ne4) 8.Kc5 Ra7 9.Kb6 Re7 10.Kc6 Ra7.
At this point White once again switches around the rook, blocking the black rook from the 7th rank: 11.Rb4 Ra2 12.Rb7 Rf2
With the way cleared White now tries to put their king to e8, finally breaking down the defense of f7. 13.Kd7 Kf8 14.Rb8+ Kg7 15. Rb4 Kf8 16. Rf4 Rd2+ 17. Kc6 Rc2+ 18. Kd6 Rd2+ 19. Ke5 Rd7 20. Nxf7 Rxf7 21. Ke6!
This is just an example line, Black can defend quite a bit longer however White will always break through eventually.
I'm quite new here, would be happy if someone can help out with putting up such a board for replaying. :)