1.使用静态nat
让r3可以ping通r2.
首先在r3上设置，让r3模拟成PC
- ip route 0.0.0.0 0.0.0.0 192.168.13.1
然后在R1上设置
- int e0/1
- ip nat inside
- exit
- int e0/0
- ip nat outside
- exit
- ip nat inside source static 192.168.13.3 202.66.84.2
2.使用动态NAT
步骤：
A.建立外部地址池
B.建立内部访问列表
C.转换
首先还是模拟R3，R4成为pc，分别敲如下命令
R3
- !
- ip route 0.0.0.0 0.0.0.0 192.168.13.1
- !
R4
- !
- ip route 0.0.0.0 0.0.0.0 192.168.14.1
- !
然后在R1上
- ip nat pool SHANGWANG 202.66.84.3 202.66.84.10 netmask 255.255.255.0
- ip access-list standard BenDi
- permit 192.168.0.0 0.0.255.255
- !
- interface Ethernet0/0
- ip address 202.66.84.1 255.255.255.0
- ip nat outside
- ip virtual-reassembly
- half-duplex
- !
- interface Ethernet0/1
- ip address 192.168.13.1 255.255.255.0
- ip nat inside
- ip virtual-reassembly
- half-duplex
- !
- interface Ethernet0/2
- ip address 192.168.14.1 255.255.255.0
- ip nat inside
- ip virtual-reassembly
- half-duplex
- !
- ip nat inside source list BenDi pool SHANGWANG
