NFS folder can't be found I've enabled an NFS share using a tool on my MacBook Pro (aptly called NFS Manager), which has worked before. However I'm on a new network and when my mediaplayer is scanning for network drives it will not find the share. Manually entering the IP and folder does not give any results either. 

How can I check whether the NFS server is running and what is blocking access?
You can check if the server is running in NFS Manager itself:

Hit the Test Server button in NFS Manager:



Enter the IP of the server (either 127.0.0.1 or the interface IP e.g. 192.168.0.5) and hit "Test".



If the NFS server is running you get the following result:



Some of the ports depend on your configuration. The above example shows the standard ports.

From remote you can check this by executing nmap. A running NFS server looks like this:

host:~ user$ nmap ip

Starting Nmap 7.30 ( https://nmap.org ) at 2016-12-16 01:26 CET
Nmap scan report for IP
Host is up (0.00015s latency).
Not shown: 967 closed ports, 27 filtered ports
PORT     STATE SERVICE
111/tcp  open  rpcbind
1001/tcp open  unknown
1021/tcp open  exp1
1023/tcp open  netvenuechat
2049/tcp open  nfs


If your firewall is off, then either your NFS server or client (or both) are configured incorrectly.