View source for Basic ASA configuration

 interface Ethernet0/0
  nameif outside
  security-level 0
  ip address 198.51.100.100 255.255.255.0
 !
 interface Ethernet0/1
  nameif inside
  security-level 100
  ip address 192.168.0.1 255.255.255.0
 !
 interface Ethernet0/2
  nameif dmz
  security-level 50
  ip address 192.168.1.1 255.255.255.0
 !
 object network inside-subnet
  subnet 192.168.0.0 255.255.255.0
 object network dmz-subnet
  subnet 192.168.1.0 255.255.255.0
 object network webserver
  host 192.168.1.100
 object network webserver-external-ip
  host 198.51.100.101
 object network dns-server
  host 192.168.0.53
 !
 access-list outside_acl extended permit tcp any object webserver eq www
 access-list dmz_acl extended permit udp any object dns-server eq domain
 access-list dmz_acl extended deny ip any object inside-subnet
 access-list dmz_acl extended permit ip any any
 !
 object network inside-subnet
  nat (inside,outside) dynamic interface
 object network dmz-subnet
  nat (dmz,outside) dynamic interface
 object network webserver
  nat (dmz,outside) static webserver-external-ip service tcp www www
 access-group outside_acl in interface outside
 access-group dmz_acl in interface dmz
 !
 route outside 0.0.0.0 0.0.0.0 198.51.100.1 1