Linksys CG7500

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Select to allow remote access to the modem router from any external IP address. Deselect
to specify an external IP address or range of IP addresses allowed to remotely access
your modem router.
Administration > Gateway Function
UPnP (Universal Plug and Play) allows devices connected to Wi-Fi to discover each other
and automatically create working configurations. Examples of UPnP-capable devices
include web cameras, online gaming applications, and VoIP devices. UPnP is enabled by
default.
Select to allow users to change router settings or disable your local internet connection
while using UPnP.
SIP ALG (Session Initiation Protocol Application Layer Gateway) is a feature that allows
certain VOIP service providers to get through your modem router's firewall. Select to use
this feature.
Administration > Backup
Backup Your Configurations
Back up your modem router’s settings to a file on your computer. You can use the file later
if you need to restore the settings. To create a backup file of the current settings.
Restore Your Configurations
Click Choose File and navigate to the backup file you want to restore. Click Restore.