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B 

B • Glossary 

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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: 

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Examines packet headers via the context established by previous 
packets that traversed the firewall 

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Monitors the connection state and saves it in a table 

• 

Closes ports until a connection to a specific port is requested 

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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. 

A home or office user who accesses television, data, or other 
services from an Internet Service provider. 

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. 

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. 

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. 

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.