Microsoft Internet Security and
Acceleration Server 2000
B
backup
domain controller (BDC)
A server that receives a copy of the security policy and master
database for a Windows 2000 domain. The master database
contains centralized security data for all domain-assigned users
and is updated when changes in security are made. See also primary
domain controller (PDC), member server.
bandwidth
The data transfer capacity of a digital communications
system.
bandwidth
control
The practice of setting the maximum network capacity that a
service is allowed to use. You can deliberately limit a server's
workload by not allowing it to receive requests at full capacity,
saving resources for other programs, such as e-mail.
basic
authentication
A method of authentication that encodes the user name and
password. Basic authentication is called "clear text" because the
encoding (base-64) can be decoded by anyone with a freely available
decoding utility. Note that encoding is not the same as encryption.
See also
Windows 2000 challenge/response authentication.
A process that establishes the initial communication channel
between the protocol driver and the network adapter driver.
bitmask
A numeric value intended for a bit-by-bit value comparison with
other numeric values, typically to flag options in parameters or
return values. Usually this comparison is done with bitwise logical
operators, such as And and Or in Visual Basic, and
ampersand (&) and pipe (|) in C++.
bits-per-second
(bps)
The basic rate of data transmission.
block filter
An IP packet filter that completely blocks access to specific
ports or from specific IPs.