单词	vpn
释义	VPN VPN abbr. virtual private network VPN abbreviation for (Computer Science) virtual private network: a network that uses the internet to transfer information using secure methods VPN VPN (communications) virtual private network VPN Virtual Private Network VPN (Virtual Private Network) A private network configured within a public network such as the Internet or a carrier's network. A VPN provides anonymity and privacy for every desktop and mobile device that accesses the Internet. VPNs use so-called "tunneling" protocols because they tunnel a private channel through a public network (see VPN protocols). Anonymity VPNs provide a server that sits between the user and the destination website, which only sees the IP address of the VPN and not the user (see illustration below). See VPN service, anonymous Web surfing and proxy server. Privacy A VPN encrypts the user's data because unencrypted traffic can be read by an attacker, especially in a public Wi-Fi hotspot. Another common encryption method is TLS, which every e-commerce and financial website employs for data transfer. However, TLS does not provide anonymity (see illustration below). See TLS. Carrier VPNs Carriers offer a variety of "virtual private routed networks" (VPRNs) that can connect customer's Ethernet frames or IP packets (see VPLS and MPLS). VPN History Years ago, the telephone carriers used their vast backbones to tunnel traffic between cities, giving the appearance of a private network that was more affordable than long distance private lines. Prior to the Internet, VPNs were built over several network architectures (see X.25, Switched 56, ATM and frame relay). Anonymity and Privacy Anonymity is provided because the website can only identify the IP address of the VPN server. Privacy is due to the encryption. See proxy server and TLS. MedicalSeeatmFinancialSeeVirtual Private Network VPN Acronym Definition VPN➣Virtual Private Network VPN➣Verace Pizza Napoletana (Italian: Genuine Pizza Association) VPN➣Vendor Part Number VPN➣Vendor Private Network VPN➣Virtuelle Private Netzwerke (German: Virtual Private Network) VPN➣Violence Prevention Network (various locations) VPN➣Virtual Page Number (memory architecture) VPN➣Ventral Posterior Nucleus (somatosensory relay nucleus in thalamus of the brain) VPN➣Vancomycin, Polymyxin, Nystatin VPN➣Vertical Pattern Noise (digital camera sensors) VPN➣Vorgangspfeil-Netzplan (German) VPN➣Voice Product Net VPN➣Virtual Path Number (telecommunications) VPN➣Volunteer Physicians Network VPN➣Virtual Productions Network
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