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49 SBG1000 Wireless Cable Modem Gateway User Guide
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Configuration: Basic Gateway TCP/IP Wireless Print Server USB
Gateway > LAN — nat config Page
Use this page to configure NAT:
Gateway > LAN — nat config page fields
Field or Button Description
LAN
Enable NAT If enabled, the single HFC IP Address (public IP address) assigned by the cable service
provider is mapped to many private IP addresses on the
SBG1000 LAN.
Apply Click to apply your changes. You must reboot the SBG1000.
NEW NAT
PASSTHROUGH
NAT Passthrough is used to identify which CPEs are passthrough devices, not subject to
network address translation. Up to 32 NAT passthrough CPEs can be entered using the
CPE MAC address. When configuring a CPE as a NAT passthrough device, you may also
identify whether the CPE should be treated as a de-militarized zone (DMZ) host. A DMZ host
is a CPE device that is completely exposed to the Internet. Any CPE device configured as a
DMZ is open to Internet hackers and should be used with extreme caution.
MAC Address Sets the MAC address of the passthrough client. The format is 16 hexadecimal numerals.
Bypass Firewall
(True DMZ)
Check the box to set the MAC address as a de-militarized zone (DMZ) client. A DMZ is a
computer on the LAN that can be accessed from the public Internet.
Add Click to add the IP address to the reserved IP address table.
CURRENT NAT
PASSTHROUGH
Displays the NAT passthrough list.
Delete Click to delete the MAC address from the NAT passthrough list.