Open NFS ports on Gentoo

UFW rules for NFS

Edit next systemd service files.

On
  /usr/lib64/systemd/system/rpc-mountd.service
  edit ExecStart
  ExecStart=/usr/sbin/rpc.mountd -F -p 32767

On
  /usr/lib64/systemd/system/rpc-statd.service
  edit ExecStart
  ExecStart=/sbin/rpc.statd -F -p 32765 -o 32766
Run 
  systemctl daemon-reload
  systemctl restart rpc-mountd.service
  systemctl restart rpc-statd.service

If check rpcinfo (rpcinfo -p) output
     program vers proto   port  service
    100000    4   tcp    111  portmapper
    100000    3   tcp    111  portmapper
    100000    2   tcp    111  portmapper
    100000    4   udp    111  portmapper
    100000    3   udp    111  portmapper
    100000    2   udp    111  portmapper
    100003    3   tcp   2049  nfs
    100003    4   tcp   2049  nfs
    100227    3   tcp   2049  nfs_acl
    100003    3   udp   2049  nfs
    100003    4   udp   2049  nfs
    100227    3   udp   2049  nfs_acl
    100021    1   udp  45388  nlockmgr
    100021    3   udp  45388  nlockmgr
    100021    4   udp  45388  nlockmgr
    100021    1   tcp  39962  nlockmgr
    100021    3   tcp  39962  nlockmgr
    100021    4   tcp  39962  nlockmgr
    100005    1   udp  32767  mountd
    100005    1   tcp  32767  mountd
    100005    2   udp  32767  mountd
    100005    2   tcp  32767  mountd
    100005    3   udp  32767  mountd
    100005    3   tcp  32767  mountd

Next add rules on UFW
  ufw allow from <your ip address>/24 to any port 111
  ufw allow from <your ip address>/24 to any port 2049
  ufw allow from <your ip address>/24 to any port 32767
  ufw allow from <your ip address>/24 to any port 32765
  ufw allow from <your ip address>/24 to any port 32766