Click to have the firewall only respond to IKE connections and never initiate them.

Click to have UDP encapsulation used on IKE and UDP protocols, enabling them to pass through intermediate NAT devices.

Enable NAT Traversal if Network Address Translation (NAT) is configured on a device between the IPSec VPN terminating points.

Choose auto, aggressive, or main. In auto mode (default), the device can accept both main mode and aggressive mode negotiation requests; however, whenever possible, it initiates negotiation and allows exchanges in main mode. You must configure the peer device with the same exchange mode to allow it to accept negotiation requests initiated from the first device.

Select an existing profile, keep the default profile, or create a new profile. The profiles selected for IKEv1 and IKEv2 can differ.

For information on IKE Crypto profiles, see Network > Network Profiles > IKE Crypto.

Click to allow the local gateway to receive fragmented IKE packets. The maximum fragmented packet size is 576 bytes.

Click to enable and enter an interval (2 - 100 seconds) and retry count (2 - 100). Dead peer detection identifies inactive or unavailable IKE peers and can help restore resources that are lost when a peer is unavailable.

Select an existing profile, keep the default profile, or create a new profile. The profiles selected for IKEv1 and IKEv2 can differ.

For information on IKE Crypto profiles, see Network > Network Profiles > IKE Crypto.

Click to enable Strict Cookie Validation on the IKE gateway.