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MM70xG2-UM-03 8-1
8
Chapter
CONFIGURING NAT
SmartCNCT Security provides both firewall and security features for the modem, protecting it from unwanted
intrusion. NAT, which is part of security, is the only SmartCNCT Security feature available this release.
BEFORE YOU BEGIN
• Set up WAN sessions. These sessions provide the external interface (public WAN IP address) to which NAT
is bound.
• Identify all internal interfaces (private IP addresses) that you will bind to the external interfaces with which you
bound NAT.
CONFIGURE NAT
NAT provides the ability to map private IP address on the LAN to public IP addresses (WAN) that are assigned to
each session. This essentially hides the private IP addresses behind the public IP addresses assigned to WAN
sessions. Prior to binding NAT to a WAN IP address, you should have previously set up PPPoA routed, PPPoE
routed, or RFC 1483 routed WAN sessions (see “Configure a New WAN Session” on page 4-2). You cannot
configure NAT for RFC 1483 bridged sessions.
Note: SmartCNCT Security, except NAT, is not supported in this release. Although the Web interface has
configuration for this features, do not change any settings other than those for NAT that are covered in this
chapter.
Step Action
1Select System on the menu bar, then select SmartCNCTSecurity under Configuration to access the
Security Interface Configuration page (Figure 8-1).
Figure 8-1. Security Interface Configuration