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VPN concentrator

(also Virtual private network concentrator)

VPN concentrator definition

A VPN concentrator is a networking device specifically designed to handle and manage numerous VPN connections simultaneously. It enables secure communication between multiple remote users or sites by establishing, processing, and maintaining VPN tunnels. VPN concentrators are often used by large corporations, institutions, or VPN service providers to support a high volume of VPN users and maintain network security.

See also: network hub

VPN concentrator examples

  • Remote access VPNs: VPN concentrators can be used to support remote access VPNs, which enable users to securely access their corporate network from remote locations, such as their home or while traveling.
  • Site-to-site VPNs: VPN concentrators can also be utilized to facilitate secure communication between different office locations or branches by establishing site-to-site VPNs.

VPN concentrator vs. VPN server

A VPN concentrator is a specialized device that can manage a large number of VPN connections, while a VPN server is typically a software solution that runs on a physical or virtual server. VPN concentrators offer better performance, scalability, and reliability for handling numerous VPN connections, but they can be more expensive than VPN servers.

Pros and cons of using a VPN concentrator


  • Scalability: VPN concentrators can handle a higher volume of VPN connections compared to VPN servers.
  • Reliability: These devices are designed to maintain a consistent and stable connection for numerous users.
  • Security: VPN concentrators come with advanced security features, such as encryption and authentication.


  • Cost: VPN concentrators can be more expensive than VPN servers, making them less suitable for small businesses or individual users.
  • Complexity: The setup and management of a VPN concentrator may require a more advanced technical expertise than for a VPN server.