Hello.  I have a watchdog in site B to ping site A.  It's working great and it alerts me if the Internet connection at site A is down.  However, after I replaced the firewall in site A with ER605, my watchdog can no longer ping site A! EVEN though I unchecked the "Block Ping from WAN" from the "Attack Defense" under Firewall.  What can I do to enable the ER605 at site A to respond to ping?  The reason why I have the watchdog in site B is because all I have in site A are cameras and sensors, no linux box or servers there.

Thanks in advance.