I have a very strange problem. I have a 3 location network:
1- Main location w/ NSA 2400
2 - Remote1 w/ TZ210
3 - Remote 2 w/ TZ210
There is a VPN Tunnel from Remote 1 & 2 to the Main location. The TZ210 on one of the remote networks started having problems a day or so ago. Every so often, the max connections are reached. The system uptime as of now is 22 days, and this issue only started happening recently. This also happened at the Main location. It was using a TZ210, but was upgraded to the NSA 2400 about 2-3 weeks ago due to the amount of nodes on the network, and the two VPN Tunnels. I have scanned the network for virus' using Symantec Endpoint Protection 12 with the most current definitions, individually scanned each PC w/ malwarebytes, and manually checked each PC for open connections, and cannot find anything wrong on the network. Sonicwall support advised me there is nothing wrong with their device, and there has to be a computer on the network w/ a virus. I simply cannot find it. I am utilizing the UTM services on the Sonicwall, which drops the max connections to 10,000. Even if i disable it and raise the max connections to 30,000, it still gets maxed out. Anyone have any idea's what's going on? Anyone else have this problem before? Anyone have any suggestions for me for troubleshooting?
Thanks in advance.