site to site VPN ASA

Anggap local subnet 192.168.15.0/24, remote subnet 192.168.16.0/24. Remote public IP 11.11.11.11.

crypto isakmp enable outside
crypto isakmp policy 10
authentication pre-share
encryption aes
hash sha
group 1
lifetime 28800

access-list REMOTE_SITE ex permit ip 192.168.15.0 255.255.255.0 192.168.16.0 255.255.255.0

crypto ipsec transform-set ESP-AES-128-SHA esp-aes esp-sha-hmac

crypto map OUTSIDE_MAP 20 match address REMOTE_SITE
crypto map OUTSIDE_MAP 20 set pfs group1
crypto map OUTSIDE_MAP 20 set peer 11.11.11.11
crypto map OUTSIDE_MAP 20 set transform-set ESP-AES-128-SHA
crypto map OUTSIDE_MAP 20 set security-association lifetime seconds 28800
crypto map OUTSIDE_MAP interface outside

nat (inside) 0 access-list REMOTE_SITE

tunnel-group 11.11.11.11 type ipsec-l2l
tunnel-group 11.11.11.11 ipsec-attributes
pre-shared-key ***