NAT - Mode

Network Address Translation (NAT) allows the translation of an Internet protocol address used within one network (for example a private IP address used in a local network) to a different IP address known within another network (for example a public IP address used on the Internet). For more information about NAT and the choices listed refer to your User's Guide.

Label

Description

NoneSelect this radio button to disable NAT.
SUA OnlySelect this radio button if you have just one public WAN IP address for your Prestige. The Prestige uses Address Mapping Set 1 in the NAT - Edit SUA NAT Server Set screen.
Edit Details
Click this link to go to the NAT - Edit SUA NAT Server Set screen.
Full Feature

Select this radio button if you have multiple public WAN IP addresses for your Prestige. Full Feature mapping types include: One-to-One, Many-to-One (SUA), Many-to-Many Overload, Many-to-Many No Overload and Server. When you select Full Feature, you must use the NAT address mapping rules screen to configure at least one address mapping set!

Edit Details
Click this link to go to the NAT - Address Mapping Rules screen.
Enable SIP ALG

The Prestige can function as an Application Layer Gateway (ALG) to allow certain NAT un-friendly applications (such as SIP) to operate properly through the Prestige.Session Initiation Protocol (SIP) is used in VoIP (Voice over IP), the sending of voice signals over the Internet Protocol.

Select this check box to turn on the SIP ALG. This allows you to make VoIP calls through the Presige.

Global Setting 
NAT Session Number Per Host
Use this field to set the highest number of NAT sessions that the Prestige will permit a host to have at one time.
ApplyClick Apply to save your configuration.