Online support

VPN technology
VPN (Virtual Private Network) is a technology that overlays communications networks and gives them the security and manageability required by business. Through VPN technology, network managers can set up secure relationships, automated connections, authorizations, and encryption, while still enjoying the low cost and availability of the Internet.

VPNs protect data while in transit across the Internet, or within a company’s enclave. The VPN has many capabilities yet the primary functions are:
- Keep data confidential (encryption)
- Ensure the identities of two parties communicating (authentication)
- Safeguard the identities of communicating parties (tunneling)
- Ensure data is accurate and in its original form (non repudiation)
- Guard against packets being sent over and over (replay prevention)

VPNs have wide applicability. In business application, the heaviest usage for VPN technology today is to address three primary needs:
- Remote Access Service - Businesses with growing numbers of remote access users, such as a mobile workforce or work-at-home employees, often have powerful incentives for employing VPN technology.
- Improved Network Security - The security of frame relay, ISDN, and other outsourced network services is not considered adequate by many organizations. Rather than depend on a third party, organizations may want to take control of their security by using VPN technology.
- Extranet Service - Business partner networks or extranets have become the basis for supply chain automation and may other competitive business solutions. VPN technology can support extranet applications with immediate connectivity at a very low cost.