NETGEAR ProSafe FVS124G - Manual (Page 229)

Reference Manual for the ProSafe VPN Firewall 25 with 4 Gigabit LAN and Dual WAN Ports
Glossary -3
202-10085-01, March 2005
Broadcast
A packet sent to all devices on a network.
C
Class of Service
A term to describe treating different types of traffic with different levels of service priority. Higher priority
traffic gets faster treatment during times of switch congestion
CA
A Certificate Authority is a trusted third-party organization or company that issues digital certificates used
to create digital signatures and public-private key pairs.
Cat 5
Category 5 unshielded twisted pair (UTP) cabling. An Ethernet network operating at 10 Mbits/second
(10BASE-T) will often tolerate low quality cables, but at 100 Mbits/second (10BASE-Tx) the cable must be
rated as Category 5, or Cat 5 or Cat V, by the Electronic Industry Association (EIA). This rating will be
printed on the cable jacket. Cat 5 cable contains eight conductors, arranged in four twisted pairs, and
terminated with an RJ45 type connector. In addition, there are restrictions on maximum cable length for both
10 and 100 Mbits/second networks.
Certificate Authority
A Certificate Authority is a trusted third-party organization or company that issues digital certificates used
to create digital signatures and public-private key pairs. The role of the CA in this process is to guarantee
that the individual granted the unique certificate is, in fact, who he or she claims to be. Usually, this means
that the CA has an arrangement with a financial institution, such as a credit card company, which provides it
with information to confirm an individual's claimed identity. CAs are a critical component in data security
and electronic commerce because they guarantee that the two parties exchanging information are really who
they claim to be.
D
DHCP
An Ethernet protocol specifying how a centralized DHCP server can assign network configuration
information to multiple DHCP clients. The assigned information includes IP addresses, DNS addresses, and
gateway (router) addresses.
DNS
Short for Domain Name System (or Service), an Internet service that translates domain names into IP
addresses. Because domain names are alphabetic, they're easier to remember. The Internet however, is really