NAS backup connection timeouts reported in IPsec VPN tunnel

A technical user is reporting recurring connection timeout errors during NAS-to-NAS backup processes conducted over an IPsec VPN tunnel.

The setup involves a client using Fortigate and QNAP NAS in an office environment, with backups transferring from the office NAS to a home NAS connected via a Grandstream GWN7001. The user noted that during recent backup attempts, pings to the Fortigate and the office NAS were lost, indicating a failure in the tunnel status.