Configure Advanced Features
117
AC1900, N900, and N450 WiFi Cable Data Gateways
7. Select the access list from which you are removing a device:
• Primary SSID. The access list for the main WiFi network.
• Guest Network SSID. The access list for the guest WiFi network.
8. In the table, select the radio button next to the device that you want to remove.
Note: If you are connected to the cable data gateway over WiFi, make sure
that you do not remove your own device from an access list that allows
access. If you do, your device is denied access and you must
reconnect to the cable data gateway over an Ethernet cable.
9. Click the Delete button.
The device is removed from the table on the Wireless Card Access List screen.
10. Click the Apply button.
Your settings are saved.
Port Forwarding and Port Triggering Concepts
By default, the cable data gateway blocks inbound traffic from the Internet to your computers
except for replies to your outbound traffic. You might need to create exceptions to this rule for
these purposes:
• To enable remote computers on the Internet to access a server on your local network
• To enable certain applications and games to work correctly if the cable data gateway
does not recognize their replies
Your cable data gateway provides two features for creating these exceptions: port forwarding
and port triggering. For more information, see the following sections:
• Remote Computer Access Basics on page 117
• Port Triggering to Open Incoming Ports on page 119
• Port Forwarding to Permit External Host Communications on page 120
• How Port Forwarding Differs from Port Triggering on page 121
For information about how to configure port forwarding, see Set Up Port Forwarding to Local
Computers on page 121.
For information about how to configure port triggering, see Set Up and Manage Port
Triggering on page 127.
Remote Computer Access Basics
When a computer on your network must access a computer on the Internet, your computer
sends your cable data gateway a message containing the source and destination address
and process information. Before forwarding your message to the remote computer, your
cable data gateway must modify the source information and create and track the
communication session so that replies can be routed back to your computer.
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