Mobile Broadband Modem MBM621 User Manual
3-2 Advanced Settings
v1.0, September 2007
Considerations for Port Forwarding
• If the IP address of the local server PC is assigned by DHCP, it may change when the PC is
rebooted. To avoid this, you can assign a static IP address to your server outside the range that
is assigned by DHCP, but in the same subnet as the rest of your LAN. By default, the IP
addresses in the range of 192.168.0.2 through 192.168.0.9 are reserved for this.
• Local PCs must access the local server using the PCs’ local LAN address (192.168.0.XXX, by
default). Attempts by local PCs to access the server using the external WAN IP address will
fail.
Remember that allowing inbound services opens holes in your firewall. Only enable those ports
that are necessary for your network. The following are two application examples of inbound rules.
Setting Up Port Forwarding
To Set Up Port Forwarding:
1. Click Port Forwarding/Port Triggering.
2. Select Port Forwarding.
3. You can select a service from the drop-down Service Name list, or you can add a custom
service.
When it is added, the service is shown in the table on this screen.
Figure 3-1
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