# Introduction to VPN Instead of using a dedicated connection, a VPN uses virtual connections routed through the Internet from the remote site or user to the private network. Security is accomplished by encrypting all the transmissions. A VPN allows a remote user to have network access just as if were local to the private network. Because most organisations have many employees traveling and working from home, remote network access has become an important security concern. Users want access, and administrators want security. The VPN is the current standard for providing both. Many larger organisations have offices in various locations. Achieving reliable and secure site-to-site connectivity for such organisations is an important issue. The various branch offices must be connected to the central corporate network through tunnels that transport traffic over the Internet. Using VPN technology for site-to-site connectivity enables a branch office with multiple links to move away from an expensive, dedicated data line and to simply utilize existing Internet connections. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://wiki.zacheller.dev/network-security/courses/isci-cnss-course/virtual-private-networks-vpn/introduction-to-vpn.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.