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ProSafe Gigabit 8 Port VPN Firewall FVS318G Reference Manual
5-54 Virtual Private Networking
v1.1, August 2010
4. In the General section of the Edit VPN Policy screen, locate the keepalive configuration
settings.
5. Click the Yes radio button to enable keepalive.
6. In the Ping IP Address boxes, enter an IP address on the remote LAN. This must be the
address of a host that can respond to ICMP ping requests.
7. Enter the Detection Period to set the time between ICMP ping requests. The default is 10
seconds.
8. In Reconnect after failure count, set the number of consecutive missed responses that will be
considered a tunnel connection failure. The default is 3 missed responses. When the VPN
firewall senses a tunnel connection failure, it forces a reestablishment of the tunnel.
9. Click Apply at the bottom of the screen.
Configuring Dead Peer Detection
The Dead Peer Detection feature maintains the IKE SA by exchanging periodic messages with the
remote VPN peer. To configure Dead Peer Detection on a configured IKE policy, follow these
steps:
1. Select VPN from the main menu and Policies from the submenu. The Policies submenu tabs
appear with the IKE Policies screen in view (see Figure 5-18 on page 5-16).
2. In the List of IKE Policies table, click the edit button to the right of the IKE policy that you
want to edit. The Edit IKE Policy screen displays.
Figure 5-39