将不同端口服务映射到相同IP

4321oiuy

分别将21号端口和80端口映射到同一IP地址

R1(config)#interface fastEthernet 0/0
R1(config-if)#ip address 192.168.2.1 255.255.255.0
R1(config-if)#no shutdown
R1(config-if)#exit
R1(config)#int fastEthernet 1/0
R1(config-if)#ip address 202.202.1.1 255.255.255.0
R1(config-if)#no shutdown
R1(config-if)#exit
R2(config)#interface fastEthernet 0/0
R2(config-if)#ip address 202.202.1.2 255.255.255.0
R2(config-if)#no shutdown
R2(config-if)#exit
R2(config)#interface fAstEthernet 1/0
R2(config-if)#ip address 202.202.2.1 255.255.255.0
R2(config-if)#no shutdown
R2(config-if)#exit
R1(config)#router rip
R1(config-router)#network 202.202.1.0
R1(config-router)#exit
R2(config)#router rip
R2(config-router)#network 202.202.1.0
R2(config-router)#network 202.202.2.0
R2(config-router)#exit
R1(config)#ip nat pool csico 202.202.1.1 202.202.1.1 netmask 255.255.255.0
R1(config)#ip nat inside source list 1 pool csico overload
R1(config)#access-list 1 permit 192.168.2.0 0.0.0.255
R1(config)#interface fastEthernet 0/0
R1(config-if)#ip nat inside
R1(config-if)#exit
R1(config)#interface fastEthernet 1/0
R1(config-if)#ip nat outside
R1(config-if)#exit
R1(config)#ip nat inside source static tcp 192.168.2.100 80 202.202.1.1 80 extendable
R1(config)#ip nat inside source static tcp 192.168.2.200 21 202.202.1.1 21 extendable
R1#debug ip nat
IP NAT debugging is on
R1#
*Mar  1 02:16:56.843: NAT*: s=202.202.2.2, d=202.202.1.1->192.168.2.100 [1256]
*Mar  1 02:16:56.935: NAT*: s=192.168.2.100->202.202.1.1, d=202.202.2.2 [263]
*Mar  1 02:16:56.995: NAT*: s=202.202.2.2, d=202.202.1.1->192.168.2.100 [1257