Sidewinder G2 6.1.2 Administration Guide - Glossary of Technical ...

Glossary
VPN (virtual private
network)
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A method of authenticating and encrypting data transmissions between the
machines (Sidewinder G2-to-Sidewinder G2, Sidewinder G2-to-client) via the
Internet. VPN makes it appear as though the networks on the internal side of
the Sidewinder G2s are connected to each other via a pair of routers with a
leased line between them.
VPN tunnel A secure route via the Internet between two machines (Sidewinder G2-to-
Sidewinder G2, Sidewinder G2-to-client, etc.) that use authentication and
encryption to transfer data.
warder A Sidewinder G2 server that provides an interface between the proxy software
and the various authentication services.
weak authentication A login process that merely requires a user to enter the same password each
time he or she logs in. The “standard” UNIX password process is considered a
weak authentication method. If someone “sniffs” the password off the phone
line or network as it is transmitted they can conceivably use that password to
then break into the system. Because your internal network is thought to be
“trusted,” this type of authentication is generally used for authenticating
internal-to-external proxy connections.
TCP/IP (transmission
control protocol/internet
protocol
UDP (User Datagram
Protocol)
A networking protocol suite created for use in the Internet.
A connectionless protocol that transfers data across a network, with only
limited reliability checking or error checking.
Web farm A group of computers that host multiple Web servers for one Web site or a
group of Web sites belonging to the same company. Load balancing is often
used to distribute traffic among the servers to handle shifts in demand.
XAUTH An abbreviation of Extended Authentication.