Reference Manual for the ProSafe VPN Firewall FVS318v3
4 Glossary
January 2005
to 9 Mbps when receiving data (known as the downstream rate) and from 16 to 640 Kbps when sending data
(known as the upstream rate).
ADSL requires a special ADSL modem. ADSL is growing in popularity as more areas around the world
gain access.
DSLAM
DSL Access Multiplexor. The piece of equipment at the telephone company central office that provides the
ADSL signal.
Dynamic Host Configuration Protocol
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.
E
EAP
Extensible Authentication Protocol is a general protocol for authentication that supports multiple
authentication methods. EAP, an extension to PPP, supports such authentication methods as token cards,
Kerberos, one-time passwords, certificates, public key authentication and smart cards. EAP is defined by
RFC 2284.
Ethernet
A LAN specification developed jointly by Xerox, Intel and Digital Equipment Corporation. Ethernet
networks transmit packets at a rate of 10 Mbps.
G
Gateway
A local device, usually a router, that connects hosts on a local network to other networks.
I
ICMP
See “Internet Control Message Protocol”
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