crypto isakmp policy 1 authentication pre-share crypto isakmp key cisco address 192.168.1.0 255.255.255.0 crypto isakmp profile ikp1 keyring default match identity address 192.168.1.0 255.255.255.0 virtual-template 1 crypto ipsec transform-set itp1 esp-aes esp-sha-hmac crypto ipsec profile isp1 set transform-set itp1 set isakmp-profile ikp1 interface Virtual-Template1 type tunnel ip unnumbered Loopback0 tunnel source FastEthernet0/0 tunnel mode ipsec ipv4 tunnel protection ipsec profile isp1