4772l1 Listing 1. The FreeS/WAN conn Listing for the Setup Shown in Figure 1 conn sentinel-vpn type=tunnel # Left security gateway, subnet behind it, next hop toward it. type=tunnel left=1.2.3.4 leftnexthop=1.2.3.5 leftsubnet=192.168.0.0/24 right=0.0.0.0 rightnexthop= rightsubnet= keyexchange=ike keylife=8h keyingtries=0 pfs=no authby=secret auto=add