We have a SonicWall TZ170 that has a connection to the internet no problem, however, Site-To-Site VPN is down. After restarting the device, communication between the 2 sites are reinstated for about 2 minutes, and the two locations can ping each other. After 2 minutes, Request is timed Out.
Both sites use the SonicWall TZ170. What could be causing this, need help ASAP, thanks.