Network engineering - VPN



VPN is a technology using internet IP as the establishment of a tunnelling to configure the internet virtual private network. IP network has good extensibility and security technology by using standard IPSEC (IP Security) which combined Encryption, Authentication, Key Management, Digital Certification safety standards.

To ensure the safety of communications is the primary consideration for the construction of VPN. In addition, to prevent confidential information stealing by the third party. Also, to prevent any damages from the data transmission and data integrity, which means data sources authentication to confirm data are not from any third party. VPN must fulfil these three standards to ensure it is secure to use as an inline network.

VPN 加密通道 VPN 加密圖示

benefits of VPN

  1. Internet safety
    All computer can enjoy the benefits of data sharing and privacy through VPN technology
  2. Integrated network
    Gather the internet, intranet, extranet and remote access into the same route
  3. Reduce Costs
    Through VPN technology, company are able to save a lot of equipment fee, monthly data fee, follow up management and maintenance costs
  4. Enhance Contact
    VPN can increase the interaction between users, business partners and suppliers. Also, to be used to secure internet connection between users and company website.

VPN Solution Example

Head office to branch: VPN Intranet

Traditional solution:
Line, frame relay, satellite connection are the traditional way to connect head office and branch. But the cost is extremely high and it is more obvious in multinational companies.

VPN solution:
Branch uses ISP to access the internet which VPN as a connection to the company with data encryption. Without prejudice the data in transmission, an appropriate ISP will be able to save the company a lot of costs.

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