Firewall - Cradlepoint ARC CBA850 Product Manual

CBA850 | USER MANUAL Firmware version 5.4.0
CRADLEPOINT

Firewall

The router automatically provides a firewall. Unless you configure the router to the contrary, the router does not respond to unsolicited
incoming requests on any port, thereby making your LAN invisible to cyber attackers.
However, some network applications cannot run with a tight firewall. Those applications need to selectively open ports in the firewall to
function correctly. The options on this page control ways of opening the firewall to address the needs of specific types of applications.
Port Forwarding Rules
A port forwarding rule allows traffic from the
Internet to reach a computer on the inside of
your network. For example, a port forwarding
rule might be used to run a Web server.
Exercise caution when adding new rules
as they impact the security of your network.
Click Add to create a new port forwarding rule, or select an
existing rule and click Edit.
Add/Edit Port Forwarding Rule
• Name: Name your rule.
• Use Port Range: Changes the selection options to
allow you to input a range of ports (if desired).
• Internet Port(s): The port number(s) as you want it
defined on the Internet. Typically these will be the
same as the local port numbers, but they do not have
to be. These numbers will be mapped to the local
port numbers.
• Local Computer: Select the IP address of an attached device from the dropdown menu, or manually input the IP address of
a device.
• Local Port(s): The port number(s) that corresponds to the service (Web server, FTP, etc.) on a local computer or device. For
example, you might input "80" in the Local Port(s) field to open a port for a Web server on a computer within your network.
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