Microsoft Internet Security and
Acceleration Server 2000
collected into a unit for shipment by a software vendor.
definition file (PDF)
A file used by Microsoft Systems
Management Server for automatic installation of client
software. The PDF can also be used for automatic uninstallation of
client software for 32-bit Windows-based clients.
In this type of service, data is cached and discarded entirely
on the basis of object size, popularity, or time since the
requested object was last updated in the cache. Frequently referred
to as on-demand caching because all caching updates are
user-initiated. See also active
A collection of services that enable a computer running Windows
NT Workstation/Windows 2000 Professional to publish a personal
Web site from the desktop. These services include WWW, FTP, and
Used to dial the access number of an Internet service provider
(ISP) by using Remote Access Service (RAS) from the Autodial
A TCP/IP utility that verifies connections to one or more
remote computers by sending ICMP packets and listening for reply
Third-party applications that are installed to extend and
enhance the functionality of ISA.
In contrast to SLIP, this more recently established Internet
communications protocol standardizes dial-up networking that uses
analog modem hardware and standard telephone lines. Although PPP is
a well-standardized protocol, vendor implementations of PPP service
can vary significantly.
Tunneling Protocol (PPTP)
A newer networking protocol that enables remote users to access
corporate networks securely across the Internet by dialing into an
Internet service provider (ISP) or by connecting directly to the
Internet. PPTP supports multiprotocol virtual private networks
(VPNs). Because PPTP allows multiprotocol encapsulation, users can
send any packet type over an IP network.
A measure of the frequency with which objects or URLs are
requested by client applications, such as Web browsers. See also
A number that identifies a certain Internet application with a
specific connection. Ports are used in TCP to name the ends of
logical connections that carry long-term conversations. See also
A network protocol that permits a client computer to access
e-mail on a server. Usually, this means that a POP3 server is used
to allow a client computer to retrieve mail that an SMTP server is
holding for it.
A server assigned to authenticate logons and maintain the
security policy for a Windows 2000 domain. This server stores
the master database of all domain-assigned security data for users
and must be updated when changes in security are made. See also
domain controller (BDC), member server.
Software that allows computers to communicate over a network.
The Internet protocol is TCP/IP.
A software program that connects a user to a remote destination
through an intermediary gateway.
A client computer that must use a proxy server to gain access
to network services not directly supported for client usage.
A computer that acts as a relay between remote servers and
clients to intercept requests and process communications on behalf
of proxy clients.