Watchguard Firebox X1000, Reference Manual

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CHAPTER 9: Glossary
118 WatchGuard Firebox System
Diffie-Hellman
A mathematical technique for securely negotatiating secret keys
over a public medium.
digital signature
An electronic identification of a person or thing created by using a
public key algorithm. Intended to verify to a recipient the
integrity of data and identity of the sender of the data.
dimmed
The grayed appearance of a command or option that is
unavailable.
disarmed
The state of a Firebox when it is not actively protecting a network.
DMZ (Demilitarized Zone)
Another name for the optional bastion network. One common use
for this network is as a public Web server.
DNS (Domain Name System)
A network system of servers that converts numeric IP addresses
into readable, hierarchical Internet addresses.
DoS
See denial of service attack .
dotted notation
The notation used to write IP addresses as four decimal numbers
separated by dots (periods), sometimes called dotted quad–
123.212.12.4 is an example.
double-click
To press the primary mouse button twice rapidly.
download
To transfer a file from a remote computer to a local computer.
driver
A software program that manipulates the computer hardware in
order to transmit data to other equipment.
drop-in configuration
A configuration in which the Firebox is physically located
between the router and the LAN without any of the computers on