Reference Manual for the ProSafe VPN Firewall FVS318v3
Glossary
7
January 2005
Mbps
Megabits per second.
MDI/MDIX
In cable wiring, the concept of transmit and receive are from the perspective of the PC, which is wired as a
Media Dependant Interface (MDI). In MDI wiring, a PC transmits on pins 1 and 2. At the hub, switch,
router, or access point, the perspective is reversed, and the hub receives on pins 1 and 2. This wiring is
referred to as Media Dependant Interface - Crossover (MDI-X).
MTU
The size in bytes of the largest packet that can be sent or received.
P
packet
A block of information sent over a network. A packet typically contains a source and destination network
address, some protocol and length information, a block of data, and a checksum.
Point-to-Point Protocol
PPP. A protocol allowing a computer using TCP/IP to connect directly to the Internet.
PPP
A protocol allowing a computer using TCP/IP to connect directly to the Internet.
PPPoA
PPPoA. PPP over ATM is a protocol for connecting remote hosts to the Internet over an always-on
connection by simulating a dial-up connection.
PPPoE
PPPoE. PPP over Ethernet is a protocol for connecting remote hosts to the Internet over an always-on
connection by simulating a dial-up connection.
PPP over ATM
PPPoA. PPP over ATM is a protocol for connecting remote hosts to the Internet over an always-on
connection by simulating a dial-up connection.
PPP over Ethernet
PPPoE. PPP over Ethernet is a protocol for connecting remote hosts to the Internet over an always-on
connection by simulating a dial-up connection.
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