Nfs file share for linux mint

Hi im sorry to ask but im having alot of trouble with nfs mounting. I have nfs enabled for a shared folder, and when i try to mount it in linux an error that comes up saying no route to host. My nfs settings have both the nas ip and my pc ip set up and put to map root to admin, the mnt command has the ip of my synology nas and the mount path. Am i missing some sort of step?