x360Recover - Appliance or vault behind a Sonicwall firewall losing connection to the Management Portal

Issue

On the 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. 

Solution

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