I recently deployed four Sonicwall NSA 2400 units to multiple physical locations all connected over a fiber network. Each site has its own LAN subnet:
Site 1: 172.20.10.x
Site 2: 172.20.50.x
Site 3: 172.20.80.x
Site 4: 172.20.110.x
All servers, computers, and resources are accessible from any other location (I can ping and log into servers at Site 3 from Site 1 for example.) However, I cannot ping or access any Sonicwalls in other buildings. For example: if physically at Site 2, I can go to http://172.20.50.1
and log into the management interface. If at another site, I cannot access or ping the firewall at that Site 2.
In the firewall rules, it appears that 4 rules were automatically generated by the device and cannot be edited. There is one for PING and another for HTTP management. Both are set up in the following manner: From LAN --> LAN, ANY source, Management IP destination, (PING or HTTP Management) as the service, traffic is set to ALLOW.
How can I allow these other sites to manage / ping the Sonicwalls at the other sites?