It is a draw! Black just has to make sure that he does not walk into checkmate!
1.Kf2
Kg7
2.Kf3
Kf6
3.Kf4
Ke6
4.Ne3
Kd6
5.Nc3
Kc6
6.Ke4
Kb7
Catch me, if you can!!
7.Kd5
Ka8
8.Kc6
Kb8
9.Nc4
Ka8
10.Nd5
Kb8
11.Nd6
Ka7
12.Nc7
Kb8
13.Ndb5
Kc8
14.Nd5
Kb8
15.Nd6
Ka8
16.Kc7
Ka7
17.Nb5+
Now Black'e eyes must lit up so bright that he would n't miss a mate in one that he could walk into!
17...Ka6
[If 17...Ka8
18.Nb6#
Checkmate!! Good game!! Thanks! See you later!]
18.Nbc3
You can still see the 'wall' but it can absolutely do nothing...It is a dead draw! Well! Almost!
What if another pawn is involved in this position...Even if it is a Black pawn, it will only increase the winning chances for White..Well...It also depends where exactly the pawn is situated..Please consult your chess tutor and request further info.
In any case, do not forget that a single knight can not force mate. And two knights can not force mate unless your opponent makes a serious mistake. Try to make use of these facts when you deside to liquidate a position and head for endgame. *