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====== Port Forwarding To An Internal Web Server ======
This is an example of how you can port forward a port to an internal machine.  In this case, we are port forwarding from the firewall to an Apache web server located on IP 192.168.0.10, with both HTTP and HTTPS services.

===== Basic Machine Setup =====
  * eth0: Internet facing interface
  * eth1: LAN facing interface
  * Dynamic IPv4 address from ISP on eth0
  * Internal LAN machines are on private subnet mask 192.168.0.0/24
  * Web server is on 192.168.0.10 with ports 80 and 443 already open
  * A second web server is on 192.168.0.11, which needs to have its port 80 available on 8080 externally

===== Configuration =====
Config: etc/srfirewall/ipv4/portfw.conf
<file - portfw.conf>
# <port> <protocol> <internal IP> <internal port> <external interface>
80 tcp 192.168.0.10 80 eth0
443 tcp 192.168.0.10 443 eth0
8080 tcp 192.168.0.11 80 eth0
</file>

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