Adequate administrative permissions
Enter ipsec verify to display the function of the IPSec (Internet Protocol Security) installation.
The error message for Checking for RSA private key can be ignored, since IPSec is used here with pre-shared keys.
If a firewall is used, open the following ports for IPSec.
Port 500: Used for key management and authentication (IKE, Internet Key Exchange)
Port 50: Used for payload transmission
Parent topic: IPSec (Internet Protocol Security) - Configuration