A virtual private network (VPN) establishes a secure, encrypted connection over the Internet, enabling users to access resources on a different network. This technology safeguards user data from interception and allows to bypass geographical restrictions to access specific content. Therefore, it is widely used in enterprise networks.
Why do you need a VPN?
Encryption and security
Robust encryption capabilities of a VPN ensure secure data transmission. Advanced encryption protocols shield user information sent over the Internet, protecting sensitive data such as passwords and financial details from interception and theft.
Privacy protection and anonymity
VPNs offer anonymity by concealing the real IP addresses of users and rerouting their traffic through a VPN server. This safeguards the information of users, such as online activities, geographical locations, and identity from third-party tracking and advertising surveillance.
Remote access
VPNs enable secure access to remote network resources from any location. They are particularly valuable for remote employees who can connect to the internal network of their company through a VPN to access files and applications, facilitating effective collaboration.
Scenarios
Remote work
VPNs enable remote work by providing access to intranet resources from anywhere with an Internet connection. Employees can securely access files and applications as though they were in the office. This ensures data transmission privacy and security. For multinational companies, VPNs are crucial for daily operations, allowing consultants and remote workers to access company resources at any time.
Bypassing geographical restrictions
Users can bypass geographical restrictions on certain content, such as videos and websites, by connecting to VPN servers in different countries to unlock access.
Interconnection of cross-regional branches
Large enterprises with branches in various regions use VPNs to establish stable, encrypted communication links, enhancing information sharing and collaboration efficiency.
Set up a VPN
For information about setting up a Point to Point Tunneling Protocol (PPTP) VPN, see How do I configure a connection between a PPTP VPN server and a PPTP VPN client on a CentOS 7 instance?
VPN Gateway, provided by Alibaba Cloud, is a secure, stable, simple, and cost-effective product that supports both IPsec-VPN and SSL-VPN to accommodate various network connectivity needs. For more information, see What is VPN Gateway?