CHAPTER 23. Firewall NAT
246
© SAMSUNG Electronics Co., Ltd.
Configuration for Figure 23.8
Router# configure terminal
Router/configure# firewall corp
Router/configure/firewall corp# policy 8 out address
192.168.1.6 32 any protocol tcp port 81 any nat-ip 100.1.1.6
Router/configure/firewall corp# end
Router#
Reverse NAT
Reverse NAT could be used in a situation where one LAN is using private
RFC 1918 IP addresses and a second LAN is using ‘real’ Internet routable IP
addresses. Figure 23.9 illustrates how reverse NAT would be applied.
Figure 23.9 Reverse NAT
Internet
100.1.1.1/29
10/100 BaceT Ethernet
FTP, SMTP, HTTP Server
192.168.1.6/24
Workstation
192.168.1.1/24
Workstation
192.168.1.2/24
Workstation
192.168.1.3/24
Workstation
192.168.1.5/24
www server is running on
TCP port 81
Ethemet 1
199.7.3.2/24
FTP, SMTP, HTTP Server
192.168.1.6/24
Summary of Contents for Ubigate iBG3026
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