ASA8.3(包含8.3)以后和ASA8.3以前NAT和ACL执行顺序

实验目的：

验证ASA8.3(包含8.3)以后和ASA8.3以前NAT和ACL执行顺序。

拓扑：

一 8.3以前

配置：

access-list acl-outside extended permit tcp any host 202.1.1.10 eq telnet
access-list acl-outside extended permit icmp any any
nat-control
static (inside,outside) 202.1.1.10 192.168.1.1 netmask 255.255.255.255
access-group acl-outside in interface outside

使用的是转化以后的IP(202.1.1.10)

验证：

二 8.3以后

配置

access-list acl-outside extended permit tcp any host 192.168.1.1 eq telnet
access-list acl-outside extended permit icmp any any
object network Static-Outside-Address
host 202.1.1.10

object network Static-Inside-Address
host 192.168.1.1

object network Static-Inside-Address
nat (Inside,Outside) static Static-Outside-Address

access-group acl-outside in interface outside

验证

结论：

ASA8.3(包含8.3)以后是NAT后ACL和ASA8.3以前是先ACL后NAT。