Athena NGFW (previously known as Network Secure) provides comprehensive protection for every network perimeter, ensuring the safety of your valuable assets, data, and users from emerging threats.
If the error (code: 0001-0002) appears after the pre-upgrade check, go to Network > Sangfor/IPsec VPN > Sangfor VPN > Basic Settings to check whether the number of local subnets exceeds 500. If yes, delete some unused subnets or merge some subnets, then reinstall the pre-upgrade check package.
Note: Deleting local subnets will affect access permissions. For example, if the subnet (192.168.0.1/24) is deleted, the peer device can no longer access this subnet. If all subnets are in use, it is recommended to merge some subnets, such as merging multiple /24 subnets into a /16 subnet.