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Configuration:
Basic Gateway TCP/IP Wireless USB
SBG940 User Guide
110
Frequently
Asked Questions
Here are answers to questions our customers frequently ask:
Q
What is high-speed cable Internet access?
A
Cable Internet access uses cable television wires instead of telephone lines to connect to the Internet. It is
extremely fast and does not tie up telephone lines for incoming or outgoing calls and faxes.
Q
How fast is the Motorola SURFboard Cable Modem Gateway SBG940?
A
Cable modems offer Internet access at speeds up to 100 times faster than a traditional phone modem. You
can experience speeds of over 1,000 Kbps. Network condition such as traffic volume and the speed of the
sites you visit can affect download speeds.
Q
How many users can one SBG940 support?
A
A single SBG940 can support up to 253 users, each assigned a unique IP address, on a Class C network.
Q
What is Network Address Translation?
A
NAT is a technique to translate private IP addresses on your LAN to a single IP address assigned by your
cable provider that is visible to outside users on the Internet.
Q
What are IEEE 802.11g and IEEE 802.11b?
A
They are IEEE wireless network standards.
Q
What type of firewall is provided on the SBG940?
A
The SBG940 provides a
stateful-inspection
firewall. For more information, see “
Firewall
” and “
Setting the
Firewall Policy
”.
Q
What wireless security measures are provided on the SBG940?
A
To protect data transmitted over wireless connections, the SBG940 supports
WPA
or
WEP
encryption and
MAC
access control lists. For information, see “
Wireless Security
” and “
Setting Up Your Wireless LAN
”.
Q
Why is there no Standby button?
A
As a security measure, current Motorola cable modems provide a Standby button to temporarily suspend the
Internet connection. Because enabling the SBG940
firewall
provides high security levels while connected, the
Standby button is not required.
Q
Can I still watch cable TV while using my SBG940?
A
Yes, your cable TV line can carry the TV signal while you send and receive information on the Internet.
Q
What are CableLabs Certified, DOCSIS, and Euro-DOCSIS?
A
CableLabs Certified, DOCSIS, and Euro-DOCSIS are the industry standards for high-speed data distribution
over cable television system networks. They are intended to ensure that all compliant cable modems
interface with all compliant cable systems. Your SBG940 is DOCSIS or Euro-DOCSIS certified.
Q
If I have an SBG940, can I still use my old 28.8 Kbps or 56 Kbps modem?
A
Yes you can. However, once you’ve experienced the speed of cable Internet access, you’ll never again want
to wait for traditional dial-up services.