DNS Doctoring NAT NAT－Ｈａｉｒｐｉｎｇ

这个LAB的主要目标就是防火墙下的私有地址能ＰＩＮＧ通本身的公网地址，　

这个在一些特殊的场合会用掉，当数据包到了防火墙以后，防火墙看到是这台机器的公网地址，而后U转了一个弯，再回到这台机器。

私有地址：192.168.1.100

公网地址：10.10.10.2

Linux(192.168.1.100) ---inside(192.168.1.1)-outside(10.10.10.1)-R10(10.10.10.10)

router R10 - 10.10.10.10 (DNS server)

ip dns server

ip host test1 10.10.10.2

ip host test2 10.10.10.2

ip host test3 10.10.10.2

ASA

object network LAN

subnet 192.168.1.0 255.255.255.0

object network PUBLIC　　＜－－－公网地址　１０.１０.１０.２

host 10.10.10.2

object network LOCAL

host 192.168.1.100

GigabitEthernet0/0 outside 10.10.10.1 255.255.255.0 manual

GigabitEthernet0/1 inside 192.168.1.1 255.255.255.0 manual

ciscoasa# sh run nat

nat (inside,inside) source dynamic LAN interface destination static PUBLIC LOCAL

nat (inside,outside) source static 192.168.1.100 10.10.10.2

nat (inside,outside) source static 192.168.1.101 10.10.10.3

ciscoasa# sh run same-security-traffic

same-security-traffic permit intra-interface