Cable modem blinking out, sonic TZ350 ??
we have a small LAN running on Optimum Cable (Altice), no server, and the cable modem blinks out often and the firewall reports lost connection WAn. We have replaced cables coming from the building closet to the modem, replaced the modem, replaced the UPSs, replaced the Sonicwall (this is new), and we even went as far as getting a new set of static IPs from our internet provider (thinking it may be a DOS attack). still, the modem loses its connection. Optimum has even put us on a new connection in the closet. still, the modem simply blinks out for a few seconds, then it resets which takes about 3 minutes. Optimum seems to point to the firewall and our tech guys seem to be pointing at Optimum. Other tenants don't seem to be having this issue and our line in the telephone closet I believe goes to four or five other tenants. some of our employees do access their computer at the office from home via a VPN. Any thoughts or similar experiences?