FEATURED VIDEO

SLIDE SHOWS
The chip giant adds new remote management, encryption and anti-theft tools baked right into next-gen Intel Core vPro processors for commercial desktops and notebooks.
The long-awaited iPad has arrived. But here are 12 other tablet devices that will take aim at Apple this year as the suddenly crowded tablet PC market heats up.
Going green was the rage of 2009, and the buzz in 2010 isn't letting up. Manufacturers are responding to increased demands from their white box makers for more eco-friendly components.
INSIDE CHANNELWEB

Results found for: VPN
Printer Print This Page
techweb
VPN
techweb
(Virtual Private Network) A private network that is configured within a public network (a carrier's network or the Internet) in order to take advantage of the economies of scale and management facilities of large networks. VPNs are widely used by enterprises to create wide area networks (WANs) that span large geographic areas, to provide site-to-site connections to branch offices and to allow mobile users to dial up their company LANs.

     For years, common carriers have built VPNs that appear as a private national or international network to each customer, but, in fact, are sharing the same physical backbone trunks with many customers. VPNs have been built over X.25, Switched 56, frame relay and ATM technologies as well as IP networks. For added security, encryption is often used. See PVC and SVC.

     Encrypting data that travels between a remote user and the corporate LAN over the Internet is very popular. It is much more economical than using private, leased lines or making long distance data calls via modem. Today, in fact, many people think that "VPN" and "encrypted connections over the Internet" are synonymous. See computer security and information security.

Internet VPNs
Several protocols are used to provide security over the Internet. For brief transactions at a Web site, SSL is widely used. For extended, secure transmissions, IPsec, L2TP and PPTP are used to provide secure "tunnels" over the Internet. See IPsec, L2TP, PPTP and SSL.

Frame Relay VPNs from Carriers
Carriers offer point-to-point and multipoint VPNs using frame relay. Customer equipment converts packets to frame relay packets. Frame relay VPNs support any network protocol (IP, IPX, SNA, etc.), but adding a location in a multipoint VPN means provisioning virtual circuits from that site to all other sites, which can be costly. See frame relay.

Virtual IP VPNs from Carriers
Carriers offer multipoint networks that accept only IP packets from the customer and run over an IP core. These virtual private routed networks (VPRNs) connect the customer's IP router to the provider's IP router and require some coordination. See MPLS.

Ethernet VPNs from Carriers
Carriers offer services that encapsulate Ethernet frames and deliver them across their network to an Ethernet connection on the other end. A "LAN interconnect" service connects one Ethernet to another. A "transparent LAN" service (TLS) offers multipoint connectivity, typically using frame relay, but has been problematic due to the differences in Ethernet and frame relay architecture. A virtual private LAN service (VPLS) is the latest implementation of a transparent LAN for Ethernet, using an IP and MPLS core to route traffic (see VPLS).
Search For VPN On ChannelWeb

Find the latest news and information on VPN from across the Channelweb Network of IT Web sites.


techweb
temrs similiar to your header
Entries before VPN
techweb
techweb VP7
techweb VP8
techweb VPC
techweb VPIM
techweb VPLS
 techweb Entries after VPN
techweb
techweb vPro
techweb VPS
techweb VR
techweb Vr10000
techweb Vr Series
techweb
define another it term
techweb techweb

techweb
Or get a random definition
techweb
copyright THIS COPYRIGHTED DEFINITION IS FOR PERSONAL USE ONLY.
All other reproduction is strictly prohibited without permission from the publisher.

Copyright (©) 1981-2008 The Computer Language Company
Inc All rights reserved.
Media Kits | Reprints | Privacy Statement | Copyright © 2010 United Business Media LLC | Terms of Service
CRN Logo ChannelWeb Logo CRN Logo CRNTech Logo Vision Events XChange IPED
ADVERTISEMENT




CHANNEL SERVICES >>