We have a problem with our VPN connections with our Sonicwall. We have a cluster with two Sonicwall TZ 500. Normal internet traffic seems to work fine, however the client-to-site VPN connection is disconnected for a couple of seconds every 5-10 minutes. It happens on every client, and with GlobalVPN as well as Netextender VPN client. I don’t think it’s a general internet issue, because I can ping the public IP of the firewall without any interruptions. The log doesn’t provide anything that’s helpfull.
Any suggestions?