User's Manual

Wireless-N 300 Modem Router DGN2200 User Manual
Advanced Configuration 6-25
v1.0, November 2009
2. Verify the following for both access points:
• The LAN network configuration of each AP is configured to operate in the same LAN
network address range as the LAN devices.
• The APs must be on the same LAN. That is, the LAN IP addresses for the APs must be in
the same network.
• If you are using DHCP, AP devices should be set to Obtain an IP address automatically
(DHCP Client) in the IP Address Source section of the Basic IP Settings screen.
• AP devices must use the same SSID, channel, authentication mode, and encryption.
3. Verify connectivity across the LANs. A computer on any LAN segment should be able to
connect to the Internet or share files and printers with any other PCs or servers connected to
any of the three WLAN segments.
Port Forwarding and Port Triggering
Port forwarding and port triggering are advanced features that affect the behavior of the
firewall in your
wireless-N modem router. Using the Port Forwarding / Port Triggering screen,
you can make local computers or servers available to the Internet for different services (for
example, FTP or HTTP), to play Internet games (like Quake III), or to use Internet applications
(like CU-SeeMe)
• Port triggering Port triggering monitors outbound traffic. When the router detects traffic on the
specified outbound port, it remembers the IP address of the computer that sent the data and
triggers the incoming port. Incoming traffic on the triggered port is then forwarded to the
triggering computer. Port triggering allows requests from the Internet only after a designated
port is triggered. Port triggering applies to chat and Internet games.
• Port forwarding is designed for FTP, Web server, or other server-based services. Once port
forwarding is set up, requests from the Internet are forwarded to the proper server.
Port Forwarding
To set up port forwarding:
1. From the main menu, under the Advanced Heading, select Port Forwarding/Port Triggering.
The following screen displays: