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Orbi Pro WiFi 6 AX5400 Router Model SXR50 and Orbi Pro WiFi 6 AX5400 Satellite Model SXS50
5. Select the Port Triggering radio button.
The page adjusts.
6. Clear the Disable Port Triggering check box.
If this check box is selected, the router does not use port triggering even if you
specified port triggering settings.
7. In the Port Triggering Timeout field, enter a value up to 9999 minutes.
This value controls how long the inbound ports stay open when the router detects
no activity. This value is required because the router cannot detect when the
application terminates.
8. Click the Apply button.
Your settings are saved.
Application example: Port triggering for Internet Relay Chat
Some application servers, such as FTP and IRC servers, send replies to multiple port
numbers. Using port triggering, you can tell the router to open more incoming ports
when a particular outgoing port starts a session.
An example is Internet Relay Chat (IRC). Your computer connects to an IRC server at
destination port 6667. The IRC server not only responds to your originating source port,
but also sends an "identify" message to your computer on port 113. Using port triggering,
you can tell the router, "When you initiate a session with destination port 6667, you must
also allow incoming traffic on port 113 to reach the originating computer." The following
sequence shows the effects of the port triggering rule you define:
1. You open an IRC client program to start a chat session on your computer.
2. Your IRC client composes a request message to an IRC server using a destination
port number of 6667, the standard port number for an IRC server process. Your
computer then sends this request message to your router.
3. Your router creates an entry in its internal session table describing this communication
session between your computer and the IRC server. Your router stores the original
information, performs Network Address Translation (NAT) on the source address
and port, and sends this request message through the Internet to the IRC server.
4. Noting your port triggering rule and observing the destination port number of 6667,
your router creates another session entry to send any incoming port 113 traffic to
your computer.
5. The IRC server sends a return message to your router using the NAT-assigned source
port (for example, port 33333) as the destination port. The IRC server also sends an
"identify" message to your router with destination port 113.
Customize Internet Traffic Rules
for Ports
205
User Manual
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