Port Forwarding - Rohde & Schwarz GP-E User Manual

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3.4.4.5

Port Forwarding

gateprotect Firewall supports "Port Forwarding" rules, which can be defined to forward
connections from a source port range to a given IP address and target port range for a
specific zone.
Port forwarding can be used to redirect all incoming traffic arriving on a specific port to
the specified target port of an internal server. For example, gateprotect Firewall can be
configured to redirect ports 80 and 443 to an internal web server and forward the ports
for mail-related protocols, such as SMTP, IMAP, POP and so forth, to another machine
(the internal mail server).
Port forwarding is performed in the WAN zone. This approach can be used regardless
of whether the WAN zone is configured with a static IP address or a dynamically allo-
cated address. When traffic is received for a port in a certain range, it will be routed to
the specified target IP address and port. For example, if a port forwarding rule is
defined to forward ports 1000-1100 to an internal server on ports 2000-2100, any traffic
received for port 1000 will be sent to port 2000 of the internal server, traffic for port
1001 to port 2001 and so forth.
For port forwarding, "NAT" must be enabled in the WAN zone settings. For further
information, see
Port Forwarding Overview
Navigate to "WAN > Port Forwarding" to display the list of port forwarding rules that are
currently defined on the system in the item list bar.
In the expanded view, the columns of the table display the "Name" of the port forward-
ing rule, its "Source Range" , "Target Range" , related "Target IP" and its "State"
(active or not). The buttons in the last column allow you to view and adjust the settings
for an existing port forwarding rule, create a rule based on a copy of an existing port
forwarding rule or delete a rule from the system.
For further information, see
Port Forwarding Settings
Under "WAN > Port Forwarding" , you can add a new or edit an existing port forward-
ing rule.
The "Port Forwarding" settings allow you to configure the following elements:
Field
"On" / "Off"
"Name"
User Manual v16.2.1 ─ 01
Activate" in the toolbar at the top of the desktop to apply your configuration
"WAN Zone Settings"
Chapter 3.2, "Icons and
Description
A slider switch indicates whether the port forwarding rule is active ( "On" ) or
inactive ( "Off" ). By clicking the slider switch, you can toggle the state of the
port forwarding rule. A new port forwarding rule is enabled by default.
Enter a unique name for the port forwarding rule.
on page 85.
Buttons",
User Interface
Menu Reference
on page 21.
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