Watchguard Firebox X1000, Reference Manual

Page: 145 / 264

Reference Guide 133
network adaptor, network interface card
A device that sends and receives data between the computer and
the network cabling. It may work either internally, such as a PCI,
or externally, such as a SCSI adaptor which connects to a
computer’s SCSI port.
network number
The portion of an IP address that is common to all hosts on a
single network and is normally defined by the set portion of the
corresponding netmask.
network range
The portion of an IP address that is allocated to individual hosts
on a single network and is normally defined by the cleared
portion of the corresponding netmask.
NFS (Network File System)
A popular TCP/IP service for providing shared file systems over
a network.
NIST
See National Institute for Standards and Technology .
node
A computer or CPU on a network.
non-seed router
A router that waits to receive routing information (the routing
maintenance table) from other routers on the network before it
begins routing packets.
NTP (Network Time Protocol)
An Internet service used to synchronize clocks between Internet
hosts. Properly configured, NTP can usually keep the clocks of
participating hosts within a few milliseconds of each other.
Oakley
The Oakley Session Key Exchange provides a hybrid Diffie-
Hellman session key exchange for use within the ISA/KMP
framework. Oakley provides the important property of Perfect
Forward Secrecy.