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Gateway Configuration Screen Definitions
SURFboard® SBG6580 Wireless Cable Modem Gateway
User Guide
45
365-095-25397-x.1
DDNS
You can use the Basic DDNS (Dynamic Domain Name System) screen to set up the DDNS service to
assign a static Internet domain name to a dynamic IP address. This allows various servers on the Internet
to access your computer for processing your requests when you are visiting various Internet sites.
Figure 40 – Basic DDNS Screen
Table 9: Basic DDNS Screen-Field Descriptions
Field
Description
DDNS Service
Select
Disabled
or select
wwwDynDNS.org
to enable the DDNS
service
Username
Enter your user name for the Dynamic Domain Name system
Password
Enter your password for the Dynamic Domain Name system
Host Name
Enter the host name for the Dynamic Domain Name system
IP Address
Displays the IP address
Status
Shows if the DDNS service is
Enabled
or
Disabled
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Gateway Configuration Screen Definitions
SURFboard® SBG6580 Wireless Cable Modem Gateway
User Guide
46
365-095-25397-x.1
Backup and Restore
You can use the Basic Backup and Restore screen to save a backup copy of the current SBG6580
gateway configuration settings locally on your computer or restore previously saved gateway
configurations.
Figure 41 – Basic Backup & Restore Screen
Table 10: Basic Backup & Restore-Field Descriptions
Field
Description
Browse
Allows you to search for a file on your computer to
retrieve or save the gateway configuration.
Restore
Restores a previously saved gateway configuration.
Backup
Creates a back up copy of the current gateway
configuration.
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Gateway Configuration Screen Definitions
SURFboard® SBG6580 Wireless Cable Modem Gateway
User Guide
47
365-095-25397-x.1
Advanced Screens
Options
You can use the Advanced Options to set the operating modes for adjusting how the SBG6580 routes IP
traffic on your home network.
Figure 42 – Advanced Options Screen
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Gateway Configuration Screen Definitions
SURFboard® SBG6580 Wireless Cable Modem Gateway
User Guide
48
365-095-25397-x.1
Table 11: Advanced Options-Field Descriptions
Field
Description
WAN Blocking
Prevents the SBG6580 Web Manager or the computers
behind it from being visible to other computers on the
SBG6580 WAN.
IPsec Pass-through
Enables the IPsec Pass-through protocol to be used
through the SBG6580 Web Manager so that a VPN device
(or software) may communicate properly with the WAN.
PPTP Pass-through
Enables the Point-to-Point Tunneling Protocol (PPTP)
Pass-through protocol to be used through the SBG6580
Web Manager so that a VPN device (or software) may
communicate properly with the WAN.
Remote Config
Management
Allows remote access to the SBG6580 Web Manager. This
enables you to configure the SBG6580 WAN by accessing
the WAN IP address at Port 8080 of the SBG6580 Web
Manager from anywhere on the Internet.
For example, in the Internet browser URL window, type
http://WanIPAddress:8080/
to access the SBG6580
Web Manager remotely.
Multicast Enable
Allows multicast-specific traffic (denoted by a multicast
specific address) to be passed to and from the computers
on the home network (LAN) behind the SBG6580 Web
Manager.
UPnP Enable
Turns on the Universal Plug and Play protocol (UPnP) agent
in the SBG6580 Web Manager.
Select this option, if you are running a CPE (client)
application that requires UPnP.
NAT ALG Status
Turn ON or OFF the various Network Address Translation
(NAT) and Application Level Gateway (ALG) status options
on your wireless network
Add MAC Address
Enter the MAC address for the computer you want to block
and click
Add MAC Address
button.
Repeat for up to 20 MAC addresses.
Remove MAC Address
Enter the MAC address filter that you want to delete or
block, then click
Remove MAC Address
button.
Clear All button
Deletes all of your MAC Address filters.
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Gateway Configuration Screen Definitions
SURFboard® SBG6580 Wireless Cable Modem Gateway
User Guide
49
365-095-25397-x.1
IP Filtering
IP filtering allows you to define which local computers will be denied access to the SBG6580 WAN. You
can configure IP address filters to block Internet traffic to specific network devices on your home
network by entering the starting and ending IP address ranges.
Note
: You only have to enter the LSB (Least-significant byte) of the IP address; the upper bytes of the IP
address are set automatically from the SBG6580 Web Manager’s IP address.
Figure 43 – Advanced IP Filtering Screen
Table 12: Advanced IP Filtering-Field Descriptions
Field
Description
Start Address
Enter the starting IP address range of the computers for which
you want to deny access to the SBG6580 WAN.
Be sure to only enter the least significant byte of the IP address.
End Address
Enter the ending IP address range of the computers you want to
deny access to the SBG6580 WAN.
Be sure to only enter the least significant byte of the IP address.
Enabled
Activates the IP address filter, when selected.
Select
Enabled
for each range of IP addresses you want to deny
access to the SBG6580 WAN.
When done, click
Apply
to activate and save your settings.

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