On Appliance/Vault - Global Management Portal (GMP) Section Not Saving Settings - Also, GMP Not Updating Backup and Replication Time
Sonicwall devices have a 15 minute TCP session timeout by default. These can affect long-lived TCP connections such as the connection between the appliances and vaults to the Global Management Portal.
To increase the TCP timeout setting:
Login to your Sonicwall device
Go to the top-level menu item “Firewall”
Choose “TCP Settings”
Change the “Default TCP Connection Timeout” from its default value of 15 minutes to 120 minutes
Posted by Kelly Mitchell on Jun 02, 2016 02:47 PM