网络工程 - 在 Cisco 1841 上允许端口 8080 - 吾爱随笔录

将 1841 配置为在将某些端口映射到内部地址时允许外部访问时遇到问题。

需要允许以下内容：

外部 IP：端口 8080 到 192.168.3.50 外部 IP：端口 8081 到 192.168.3.51

这是1841的配置：

FT-ROUTER#sh run
Building configuration...

Current configuration : 2394 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname FT-ROUTER
!
boot-start-marker
boot system flash c1841-ipbasek9-mz.124-20.T.bin
boot-end-marker
!
logging message-counter syslog
!
no aaa new-model
ip source-route
!
ip dhcp excluded-address 192.168.3.1 192.168.3.5
ip dhcp excluded-address 192.168.2.1 192.168.2.5
ip dhcp excluded-address 192.168.1.1 192.168.1.5
!         
ip dhcp pool MAINDATA
   network 192.168.1.0 255.255.255.0
   default-router 192.168.1.1 
   dns-server 68.105.28.16 68.105.29.16 
!
ip dhcp pool PUBLICWIFI
   network 192.168.2.0 255.255.255.0
   default-router 192.168.2.1 
   dns-server 68.105.28.16 68.105.29.16 
!
ip dhcp pool SECURITY
   network 192.168.3.0 255.255.255.0
   default-router 192.168.3.1 
   dns-server 68.105.28.16 68.105.29.16 
!
!
ip cef
no ip domain lookup
!

interface FastEthernet0/0
 ip address 98.190.71.2 255.255.255.240
 ip nat outside
 ip virtual-reassembly
 duplex auto
 speed auto
!
interface FastEthernet0/1
 no ip address
 duplex auto
 speed auto
!
interface FastEthernet0/1.100
 description FT-MAIN-DATA
 encapsulation dot1Q 100
 ip address 192.168.1.1 255.255.255.0
 ip nat inside
 ip virtual-reassembly
!
interface FastEthernet0/1.200
 description FT-PUBLIC-WIRELESS
 encapsulation dot1Q 200
 ip address 192.168.2.1 255.255.255.0
 ip nat inside
 ip virtual-reassembly
!
interface FastEthernet0/1.300
 encapsulation dot1Q 300
 ip address 192.168.3.1 255.255.255.0
 ip nat inside
 ip virtual-reassembly
!

!
ip default-gateway 98.190.71.1
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 98.190.71.1
!
ip nat inside source list 10 interface FastEthernet0/0 overload
!
access-list 10 permit 192.168.1.0 0.0.0.255
access-list 10 permit 192.168.2.0 0.0.0.255
access-list 10 permit 192.168.3.0 0.0.0.255

这是一个基本图：