A device that routes data packets between multiple TCP/IP
networks having dissimilar transport protocols. ISA Server can act
as a gateway between an internal network (an intranet) and the
public network (the Internet). See also router.
A protocol that is used in conjunction with the Point-to-Point
Tunneling Protocol (PPTP) to create virtual private networks
(VPNs). After the PPTP control session has been established, GRE is
used to encapsulate the data or payload in a secure manner.
A 128-bit value that uniquely identifies objects such as OLE
servers, interfaces, manager entry-point vectors, and client
A hierarchical system for finding and retrieving information
from the Internet or an intranet. An enhanced version, Gopher Plus,
returns more information about an item, such as file size, last
date of modification, and the administrator's name. A display of
all files available on a Gopher server is called the
In a network, an account containing user accounts that are
called members. The permissions and rights granted to a group are
also provided to its members, making groups a convenient way to
grant common capabilities to collections of user accounts. Groups
are assigned unique names within a domain.