3Com OfficeConnect 3C892A User Manual page 125

G
119
LOSSARY
retransmission. Reliability is dependent upon the application. Note that because it
does not perform checking, UDP is more efficient than TCP. UDP is commonly used
for Internet games.
A virtual private network is a secure, private data network that is established over
VPN
the Internet resulting in significant cost savings from using local, toll free access
numbers. Also, because the existing Internet backbone is used, there is less
investment needed in private network infrastructure. See also PPTP.