Well I did this, but doesn’t tell me very much.
NFS:/home/administrator/Public/Iso # ss -lunpt
Netid State Recv-Q Send-Q Local Address:Port Peer Address:Port
udp UNCONN 0 0 0.0.0.0:44341 0.0.0.0:* users:(("rpc.statd",pid=1335,fd=7))
udp UNCONN 0 0 0.0.0.0:20048 0.0.0.0:* users:(("rpc.mountd",pid=6693,fd=7))
udp UNCONN 0 0 0.0.0.0:111 0.0.0.0:* users:(("rpcbind",pid=6682,fd=5),("systemd",pid=1,fd=118))
udp UNCONN 0 0 127.0.0.1:323 0.0.0.0:* users:(("chronyd",pid=1327,fd=1))
udp UNCONN 0 0 127.0.0.1:703 0.0.0.0:* users:(("rpc.statd",pid=1335,fd=45))
udp UNCONN 0 0 0.0.0.0:922 0.0.0.0:* users:(("rpcbind",pid=6682,fd=10))
udp UNCONN 0 0 0.0.0.0:2049 0.0.0.0:*
udp UNCONN 0 0 0.0.0.0:35410 0.0.0.0:*
udp UNCONN 0 0 ::]:20048 ::]:* users:(("rpc.mountd",pid=6693,fd=9))
udp UNCONN 0 0 ::]:111 ::]:* users:(("rpcbind",pid=6682,fd=7),("systemd",pid=1,fd=120))
udp UNCONN 0 0 ::1]:323 ::]:* users:(("chronyd",pid=1327,fd=2))
udp UNCONN 0 0 ::]:922 ::]:* users:(("rpcbind",pid=6682,fd=11))
udp UNCONN 0 0 ::]:46880 ::]:* users:(("rpc.statd",pid=1335,fd=9))
udp UNCONN 0 0 ::]:2049 ::]:*
udp UNCONN 0 0 ::]:43150 ::]:*
tcp LISTEN 0 64 0.0.0.0:2049 0.0.0.0:*
tcp LISTEN 0 128 0.0.0.0:111 0.0.0.0:* users:(("rpcbind",pid=6682,fd=4),("systemd",pid=1,fd=117))
tcp LISTEN 0 128 0.0.0.0:20048 0.0.0.0:* users:(("rpc.mountd",pid=6693,fd=8))
tcp LISTEN 0 128 0.0.0.0:22 0.0.0.0:* users:(("sshd",pid=1355,fd=3))
tcp LISTEN 0 128 0.0.0.0:55639 0.0.0.0:* users:(("rpc.statd",pid=1335,fd=8))
tcp LISTEN 0 64 0.0.0.0:33689 0.0.0.0:*
tcp LISTEN 0 100 127.0.0.1:25 0.0.0.0:* users:(("master",pid=1685,fd=13))
tcp LISTEN 0 64 ::]:2049 ::]:*
tcp LISTEN 0 128 ::]:44867 ::]:* users:(("rpc.statd",pid=1335,fd=10))
tcp LISTEN 0 128 ::]:111 ::]:* users:(("rpcbind",pid=6682,fd=6),("systemd",pid=1,fd=119))
tcp LISTEN 0 128 ::]:20048 ::]:* users:(("rpc.mountd",pid=6693,fd=10))
tcp LISTEN 0 128 ::]:22 ::]:* users:(("sshd",pid=1355,fd=4))
tcp LISTEN 0 64 ::]:41591 ::]:*
tcp LISTEN 0 100 ::1]:25 ::]:* users:(("master",pid=1685,fd=14))