I went into the Netgear router ( usually it's 192.168.x.x) and logged with my credential and then set up a port forwarding  for port 500 and 4500 ( UDP)   so it goes from my router and forward into the MX64 and that solved the problem . my  home set  up is a Modem Router that connect to the Mx64 and then it goes to Meraki  switch and Wireless AP . ... View more