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Glossary
80
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Glossary
This glossary defines some of the terms and acronyms used in this document.
TERM
DEFINITION
Authentication
A process where the CMTS verifies that access is authorized, using a
password, trusted IP address, or serial number.
cable modem
A device installed at a subscriber location to provide data
communications over an HFC network. Unless otherwise specified,
all references to “cable modem” in this documentation refer to
DOCSIS cable modems only.
coaxial cable
A type of cable consisting of a center wire surrounded by insulation
and a grounded shield of braided (coax) wire. The shield minimizes
electrical and radio frequency interference. Coaxial cable has high
bandwidth and can support transmission over long distances.
DHCP
Dynamic Host Configuration Protocol server — dynamically assigns
IP addresses to client hosts on an IP network. DHCP eliminates
manually assigning static IP addresses by “leasing” an IP address
and subnet mask to each client. It enables the automatic reuse of
unused IP addresses.
The SBG901 is simultaneously a DHCP client and a DHCP server.
A DHCP server at the cable system headend assigns a public IP
address to the SBG901 and optionally to clients on the SBG901 LAN.
The SBG901 contains a built-in DHCP server that assigns private IP
addresses to clients.
DMZ
A “de-militarized zone” is one or more hosts logically located
between a private LAN and the Internet. A DMZ prevents direct
access by outside users to private data. (The term comes from the
geographic buffers located between some conflicting countries, such
as North and South Korea.) In a typical small DMZ configuration, the
DMZ host receives requests from private LAN users to access
external web sites and initiates sessions for these requests. The
DMZ host cannot initiate a session back to the private LAN. Internet
users outside the private LAN can access only the DMZ host. You
can use a DMZ to set up a web server or for gaming without
exposing confidential data.
downstream
In a cable data network, this is the direction of the data received by
the computer from the Internet.
firewall
A security software system on the SBG901 that enforces an access
control policy between the Internet and the SBG901 LAN.
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81
TERM
DEFINITION
gateway
A device that enables communication between networks using
different protocols. The SBG901 enables up to 245 computers
supporting IEEE 802.11b/g or Ethernet to share a single broadband
Internet connection.
ISP
Internet Service Provider
MAC address
The Media Access Control address is a unique, 48-bit value
permanently saved in ROM at the factory to identify each Ethernet
network device. It is expressed as a sequence of 12 hexadecimal
digits printed on a label on the bottom of the SBG901. You need to
provide the HFC MAC address to the Internet Service provider. Also
called an Ethernet address, physical address, hardware address, or
NIC address.
NAT
Network Address Translation is an Internet standard for a LAN to use
one set of IP addresses for internal traffic and a second set of IP
addresses for external traffic.
pass-through
A pass-through client on the SBG901 LAN obtains its public IP
address from the Internet Service provider’s DHCP server.
port mirroring
A feature that enables one port (source) on the SBG901 to be copied
to another port (destination) to be studied. The destination mirrors
the transmitted (from) or received (to) data on the source port to
enable the person managing the network to monitor activity.
port triggering
A mechanism that allows incoming communication with specified
applications. Primarily used for gaming applications.
private IP
An IP address assigned to a computer on the SBG901 LAN by the
DHCP server on the SBG901 for an address-specified lease time.
Private IP addresses are used by the SBG901 LAN only; they are
invisible to devices on the Internet. See also public IP address.
public IP address
The IP address assigned to the SBG901 by the Internet Service
provider. A public IP address is visible to devices on the Internet. See
also private IP address.
QoS
Quality of service describes the priority, delay, throughput, and
bandwidth of a connection.
RJ-11
The most common type of connector for household or office phones.
RJ-45
An 8-pin modular connector; this is the most common connector
type for 10Base-T or 100Base-T Ethernet networks.
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TERM
DEFINITION
stateful-inspection
A type of firewall that tracks each connection, traversing all firewall
interfaces to ensure validity. In addition to examining the source and
destination in the packet header based on static rules, a stateful
inspection firewall:
•
Examines packet headers via the context established by previous
packets that traversed the firewall
•
Monitors the connection state and saves it in a table
•
Closes ports until a connection to a specific port is requested
•
May examine the packet contents up through the application layer
to determine more than just the source and destination
A stateful inspection firewall is more advanced than a static filter
firewall.
subscriber
A home or office user who accesses television, data, or other
services from an Internet Service provider.
synchronous
The SBG901 uses synchronous timing for upstream data
transmissions. The CMTS broadcasts timing messages that
bandwidth is available. The SBG901 reserves data bytes requiring x
number of mini-slots. The CMTS replies that it can receive data at a
specified time (synchronized). At the specified time, the SBG901
transmits the x-number of data bytes.
upstream
In a cable data network, upstream describes the direction of data
sent from the subscriber’s computer through the cable modem to
the CMTS and the Internet.
Wireless Cable Modem
Gateway
The Motorola SURFboard Wireless Cable Modem Gateway is a
single device that combines a cable modem, router, Ethernet switch,
wireless access point, and DHCP server for SOHO or SME use.
WPA
Wi-Fi Protected Access (WPA) encryption, as described on the Wi-Fi
Alliance web page: http://www.wifialliance.org. It is a far more robust
form of encryption than WEP. Motorola recommends using WPA if
all of your client hardware supports WPA.
Page 84 / 86
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Software License
83
C
Software License
SURFboard SBG901 Wireless Cable Modem Gateway
Motorola, Inc.
Home & Networks Mobility Solutions Business (“Motorola”)
101 Tournament Drive
Horsham, PA
19044
IMPORTANT
: PLEASE READ THIS SOFTWARE LICENSE (“LICENSE”) CAREFULLY BEFORE YOU INSTALL, DOWNLOAD
OR USE ANY APPLICATION SOFTWARE, USB DRIVER SOFTWARE, FIRMWARE AND RELATED DOCUMENTATION
(“SOFTWARE”) PROVIDED WITH MOTOROLA’S CABLE DATA PRODUCT (THE “CABLE DATA PRODUCT”). BY USING THE
CABLE DATA PRODUCT AND/OR INSTALLING, DOWNLOADING OR USING ANY OF THE SOFTWARE, YOU INDICATE
YOUR ACCEPTANCE OF EACH OF THE TERMS OF THIS LICENSE. UPON ACCEPTANCE, THIS LICENSE WILL BE A
LEGALLY BINDING AGREEMENT BETWEEN YOU AND MOTOROLA. THE TERMS OF THIS LICENSE APPLY TO YOU AND
TO ANY SUBSEQUENT USER OF THIS SOFTWARE.
IF YOU DO NOT AGREE TO ALL OF THE TERMS OF THIS LICENSE (I) DO NOT INSTALL OR USE THE SOFTWARE AND (II)
RETURN THE CABLE DATA PRODUCT AND THE SOFTWARE (COLLECTIVELY, “PRODUCT”), INCLUDING ALL
COMPONENTS, DOCUMENTATION AND ANY OTHER MATERIALS PROVIDED WITH THE PRODUCT, TO YOUR POINT OF
PURCHASE OR SERVICE PROVIDER, AS THE CASE MAY BE, FOR A FULL REFUND. BY INSTALLING OR USING THE
SOFTWARE, YOU AGREE TO BE BOUND BY THE PROVISIONS OF THIS LICENSE AGREEMENT.
The Software includes associated media, any printed materials, and any “on-line” or electronic documentation.
Software provided by third parties may be subject to separate end-user license agreements from the manufacturers of
such Software.
The Software is never sold. Motorola licenses the Software to the original customer and to any subsequent licensee for
personal use only on the terms of this License. Motorola and its 3rd party licensors retain the ownership of the
Software.
You may:
USE the Software only in connection with the operation of the Product.
TRANSFER the Software (including all component parts and printed materials) permanently to another person, but only
if the person agrees to accept all of the terms of this License. If you transfer the Software, you must at the same time
transfer the Product and all copies of the Software (if applicable) to the same person or destroy any copies not
transferred.
TERMINATE this License by destroying the original and all copies of the Software (if applicable) in whatever form.
You may not:
(1) Loan, distribute, rent, lease, give, sublicense or otherwise transfer the Software, in whole or in part, to any other
person, except as permitted under the TRANSFER paragraph above. (2) Copy or translate the User Guide included with
the Software, other than for personal use. (3) Copy, alter, translate, decompile, disassemble or reverse engineer the
Software, including but not limited to, modifying the Software to make it operate on non-compatible hardware. (4)
Remove, alter or cause not to be displayed, any copyright notices or startup message contained in the Software
programs or documentation. (5) Export the Software or the Product components in violation of any United States export
laws.
Page 85 / 86
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Software License
84
The Product is not designed or intended for use in on-line control of aircraft, air traffic, aircraft navigation or aircraft
communications; or in design, construction, operation or maintenance of any nuclear facility. MOTOROLA AND ITS 3RD
PARTY LICENSORS DISCLAIM ANY EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR SUCH USES. YOU REPRESENT
AND WARRANT THAT YOU SHALL NOT USE THE PRODUCT FOR SUCH PURPOSES.
Title to this Software, including the ownership of all copyrights, mask work rights, patents, trademarks and all other
intellectual property rights subsisting in the foregoing, and all adaptations to and modifications of the foregoing shall
at all times remain with Motorola and its 3rd party licensors. Motorola retains all rights not expressly licensed under
this License. The Software, including any images, graphics, photographs, animation, video, audio, music and text
incorporated therein is owned by Motorola or its 3rd party licensors and is protected by United States copyright laws
and international treaty provisions. Except as otherwise expressly provided in this License, the copying, reproduction,
distribution or preparation of derivative works of the Software, any portion of the Product or the documentation is
strictly prohibited by such laws and treaty provisions. Nothing in this License constitutes a waiver of Motorola’s rights
under United States copyright law.
This License and your rights regarding any matter it addresses are governed by the laws of the Commonwealth of
Pennsylvania, without reference to conflict of laws principles. THIS LICENSE SHALL TERMINATE AUTOMATICALLY if
you fail to comply with the terms of this License.
Motorola is not responsible for any third party software provided as a bundled application, or otherwise, with the
Software.
U.S. GOVERNMENT RESTRICTED RIGHTS
The Product and documentation is provided with RESTRICTED RIGHTS. The use, duplication or disclosure by the
Government is subject to restrictions as set forth in subdivision (c)(1)(ii) of The Rights in Technical Data and Computer
Software clause at 52.227-7013. The contractor/manufacturer is Motorola, Inc., Home & Networks Mobility Solutions
Business, 101 Tournament Drive, Horsham, PA
19044.

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