We have been using a Verizon 4G LTE router for a temporary solution until the fiber circuit is installed.
Do not have a static IP so, we are double NAT'g (less than ideal). Using a TZ400 Sonicwall as our firewall appliance.
1) How do we setup the Sonicwall so that we trigger an alert or monitor the WAN connection? Verizon is saying that their service hasn't experienced any outage when we call. The outages are momentary for the most part however, in the morning the VPN tunnels are down and we have to renegotiate them.
2) Saw posts on setting the optimal MTU on the WAN interface of the Sonicwall based on fragmented packets. Is this something you should always perform by pinging with the following command "ping google.com -f -l 1500" and working your way backwards by a value of 8?