Watchguard Firebox X1000 Reference Manual page 130

CHAPTER 9: Glossary
118
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
WatchGuard Firebox System