VPNs cannot make online connections completely anonymous, but they can usually increase privacy and security. An intranet site-to-site VPN describes a configuration where the sites connected by the VPN belong to the same organization, whereas an extranet site-to-site VPN joins sites belonging to many organizations. In the context of site-to-site configurations, the terms intranet and extranet are used to describe two different use cases. Intranet versus extranet site-to-site VPNs Despite this, the two technologies are not mutually exclusive and, in a significantly complex business network, may be combined to enable remote access to resources located at any given site, such as an ordering system that resides in a datacenter. Typically, individuals interact with remote access VPNs, whereas businesses tend to make use of site-to-site connections for business-to-business, cloud computing, and branch office scenarios. This configuration is of particular use for businesses, as this allows for distinct offices, data centers, and cloud computing platforms to seamlessly interconnect. These routers then route traffic bound for other sites over the VPN, effectively creating one seamless local area network that spans multiple physical locations. Site-to-site Instead of connecting a single endpoint to a larger network, site-to-site connections connect two routers. Such a configuration may be employed when a remote worker needs access to private resources, or to enable a mobile worker (such as a cable technician) to access important tools without exposing them to the public internet. VPN connectivity overview, showing intranet site-to-site and remote-work configurations used togetherīroadly speaking, VPN configurations fall into two categories: Remote access Analagous to simply plugging one's computer into a network, this configuration enables an individual to access an intranet as if they were physically connected to it. VPNs are so named because they may be used to provide virtual (as opposed to physical) access to a private network.Ĭolloquially, the term VPN may be used to refer, albeit improperly, to a proxy service that uses VPN technology (such as OpenVPN) as opposed to higher-level proxy server protocols (such as SOCKS) as it does not require configuration of individual applications to tunnel their traffic through the proxy server, instead employing routing to redirect traffic. VPNs are frequently used in the information technology sector to provide access to resources for users that are not physically connected to an organization's network, such as telecommuting workers. Such a system enables users to access network resources that may otherwise be inaccessible from the public internet. The term virtual private network (abbreviated VPN) describes any technology that can encapsulate and transmit network data, typically Internet Protocol data, over another network.

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