Watchguard Firebox X20E Reference Manual page 69

masquerading
In the LiveSecurity System, masquerading sets up addressing so that a
Firebox presents its IP address to the outside world in lieu of the IP addresses
of the hosts protected by the Firebox.
Mazameter
See Bandwidth Meter.
MIME (Multipurpose Internet Mail Extensions)
Extensions to the SMTP format that allow binary data, such as that found in
graphic files or documents, to be published and read on the Internet.
MSDUN
Microsoft Dial-Up Networking is an executable program required for remote
user VPN.
multiple network configuration
A configuration used in situations in which a Firebox is placed with separate
logical networks on its interface.
MUVPN
Multi-user VPN.
network address translation (NAT)
Network address translation hides or masquerades network addresses from
hosts on another network, protecting the confidentiality and architecture of
the network.
netmask
An inverse mask of the significant bits of a network address. On a local net,
the range of addresses one can expect to be found directly connected to the
network. Netmasks generally occur with a Class C license address space of 8
bits, so the netmask is 255.255.255.0. It can be a smaller number of bits if
subnetting is in effect. Some systems require the netmask to be an even
number of bits.
Network Configuration wizard
Creates a basic Firebox configuration. It consists of a series of windows that
prompt for essential configuration information for drop-in or advanced
network installations.
NFS (Network File System)
A popular TCP/IP service for providing shared file systems over a network.
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.
octet
A byte. Used instead of "byte" in most IP documents because historically
many hosts did not use 8-bit bytes.
Reference Guide 65