Check Point UTM-1 Edge User Manual page 526

Adding and Editing VPN Sites
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The Site Name dialog box appears.
6. Type a name for the VPN site.
You may choose any name.
7. To keep the tunnel to the VPN site alive even if there is no network traffic
between the UTM-1 appliance and the VPN site, select Keep this site alive.
Click Next.
8.
512 Check Point UTM-1 Edge User Guide