Watchguard Firebox X1000 Reference Manual page 133

Reference Guide
failover logging
A process in which contact is automatically established with a
secondary log host, in the event that the Firebox cannot
communicate with the primary log host.
fail-shut mode
A condition in which a firewall blocks all incoming and outgoing
traffic in the event of a firewall failure. This is the opposite of fail-
open mode, in which a firewall crash opens all traffic in both
directions. Fail-shut is the default failure mode of the WatchGuard
Firebox System.
fast Ethernet
An Ethernet networking system that transmits data at 100 Mbps,
based on the Ethernet 802.3 standard.
field
An area in a form or Web page in which to enter or view specific
information about an individual task or resource.
file extension
A period and up to three characters at the end of a file name. The
extension can help identify the kind of information a file contains.
file server
A dedicated network computer used by client computers to store
and access files.
filtering process
An Ethernet switch or bridge process that reads the contents of a
packet and discards it if it does not need to be forwarded.
filtering rate
The rate at which an Ethernet device can receive packets and drop
them without any loss of incoming packets or delay in processing.
filters
Small, fast programs in a firewall that examine the header files of
incoming packets and route or reject the packets based on the
rules for the filter.
fingerprint
A unique identifier for a key that is obtained by hashing specific
portions of the key data.
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