Owner's Manual
Table Of Contents
- User Manual
- Table of Contents
- Overview
- Connect to the Network and Access the Router
- Specify Your Internet Settings
- Use the Internet Setup Wizard
- Manually Set Up the Internet Connection
- Specify IPv6 Internet Connections
- Requirements for Entering IPv6 Addresses
- Use Auto Detect for an IPv6 Internet Connection
- Use Auto Config for an IPV6 Internet Connection
- Set Up an IPv6 6rd Tunnel Internet Connection
- Set Up an IPv6 6to4 Tunnel Internet Connection
- Set Up an IPv6 Pass Through Internet Connection
- Set Up an IPv6 Fixed Internet Connection
- Set Up an IPv6 DHCP Internet Connection
- Set Up an IPv6 PPPoE Internet Connection
- Change the MTU Size
- Control Access to the Internet
- Optimize Performance
- Specify Network Settings
- View or Change WAN Settings
- Dynamic DNS
- Set Up a Default DMZ Server
- Change the Router’s Device Name
- Change the LAN TCP/IP Settings
- Specify the IP Addresses That the Router Assigns
- Disable the DHCP Server Feature in the Router
- Manage Reserved LAN IP Addresses
- Custom Static Routes
- Specify Basic WiFi Settings
- Set Up a Guest WiFi Network
- View or Change Advanced WiFi Settings
- Use the Router as a WiFi Access Point
- Generate a New Backhaul Password
- Manage Your Network
- Customize Internet Traffic Rules for Ports
- Use VPN to Access Your Network
- Troubleshooting
- Supplemental Information
- Specs
- Quick Start Guide
- Spec Sheet
Customize Internet Traffic Rules for Ports
101
Orbi High-Performance AC3000 Tri-band WiFi System
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.
6. When your router receives the incoming message to destination port 33333, it checks its
session table to see if a session is active for port number 33333. Finding an active session,
the router restores the original address information replaced by NAT and sends this reply
message to your computer.
7. When your router receives the incoming message to destination port 113, it checks its
session table and finds an active session for port 113 associated with your computer. The
router replaces the message’s destination IP address with your computer’s IP address and
forwards the message to your computer.
8. When you finish your chat session, your router eventually senses a period of inactivity in the
communications. The router then removes the session information from its session table,
and incoming traffic is no longer accepted on port numbers 33333 or 113.