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--- port_forwarding [2012/08/10 17:42]
eric
+++ port_forwarding [2013/05/21 16:00] (current)
eric
@@ Line 2: / Line 2: @@
 ===== Motivation =====
 {{:portf-schematic.png?nolink&500}}
@@ Line 13: / Line 14: @@
 {{:portf-i.png?nolink}}
+These options let you forward a single port from the router to a host on the local network.  The options are:
+  * **Description:** A description of this forward.  This is just a label for the rule, it doesn't affect how the forward functions, and is optional.
+  * **Protocol:** Whether to forward TCP packets, UDP packets or Both.
+  * **From Port:** The external port (on the WAN interface of the router) to forward to the host on the local network.
+  * **To IP:** The IP address of the host on the local network to which you want to forward the port
+  * **To Port:** The port on the local host to which you are forwarding traffic.  If unspecified, this is assumed to be the same as the //From Port//
 ===== Port Range Forwarding =====
+These options let you forward a range of ports to a single local host.  The source port range and the destination port range are the same.
+The options are:
+  * **Description:** A description of this forward.  This is just a label for the rule, it doesn't affect how the forward functions, and is optional.
+  * **Protocol:** Whether to forward TCP packets, UDP packets or Both.
+  * **Start Port:** The first (lowest) port in the port range being forwarded
+  * **End Port:** The last (highest) port in the port range being forwarded
+  * **To IP:** The IP address of the host on the local network to which you want to forward this range of ports
 {{:portf-r.png?nolink}}
@@ Line 21: / Line 42: @@
 {{:portf-dmz.png?nolink}}
+When  a DMZ (De-Militarized Zone) is configured, all ports not specifically used by the router or forwarded to other hosts are forwarded to one specific host on the local network.  This can include a lot of hostile traffic, so only activate this option if this host has a firewall configured.
 ===== UPnP / NAT-PMP =====
 {{:portf-upnp.png?nolink}}
+UPnP is a protocol that allows hosts to dynamically open and forward ports.  Since this can pose a security risk, it is disabled by default.  However, some applications require UPnP.  Think carefully before enabling UPnP.

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