Accept Inbound Traffic To Servers Behind NAT
Written by Yanurmal on November 12, 2008 – 8:09 am -This config to make inbound traffic to a web server in local network behind NAT.
Req:
- Private IP Address plan (eg. 192.168.1.0/24)
- Public IP Address plan (eg.100.1.2.3/30)
- Web Server (port 80) IP Address (eg.192.168.1.10)
- Standard NAT Config work properly
All incoming web traffic from the Internet that comes to 100.1.2.3 will be forwarded to 192.168.1.10
hostname CiscoNAT
!
enable secret 5 KjhKJGkj$57JHkkl98KJH
!
ip subnet zero
!
interface FastEthernet0/0
description LAN Interface
ip address 192.168.1.254 255.255.255.0
ip nat inside
duplex auto
speed auto
!
interface Serial0
description WAN Interface
ip address 100.1.2.3 255.255.255.248
ip nat outside
ip access-group 101 in
!
ip nat inside source static 192.168.1.10 80 interface Serial0
!
access-list 101 deny ip any host 255.255.255.255
access-list 101 permit tcp any any eq 80
!
line con0
line vty 0 4
login
password cisco
!
end
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