Friday, 1 June 2012

Site-To-Site VPN & Remote-Access VPN


Site-To-Site Virtual Private Network

A site-to-site VPN allows different offices in multiple fixed locations to establish secure connections with each other over public network such as the internet. An example would be accessing the school server from home or somewhere else other than the school. Site-to-site VPN extends the company’s network, making the computer resources from one location available to employees at other locations. There are so many companies that need a site-to-site VPN because they are a growing company/corporation with dozens of branch offices around the world.


It is important to know that there are two types of site-to-site VPNs:


1) Intranet-Based &
2) Extranet-Based.



Firstly, Intranet-Based is when a company has one or more remote locations that they wish to join in a single private network, they can create an intranet VPN to connect each separate LAN to a single WAN.
However, Extranet-Based is when a company has a close relationship with another company, it can build an extranet VPN that connects those companies LANs. This extranet VPN lets the corporations to work alongside each other in a safe, secured network environment while denying access to their own separate intranets.


Remote-access VPN

A remote-access VPN allows individual users to establish secure connections with a remote computer network. Those users can access the secure resources on that particular network as if they were directly plugged in to the network’s servers. An example of a company that would need a remote-access VPN is a large firm with hundreds of salespeople in the field. There are two components needed in remote-access VPN.


They are:
1) Network Access Server (NAS)
2) A client software


Firstly, it’s a NAS that user connects to form the Internet in order to use a VPN. NAS will need the user to provide valid credentials to sign in to the VPN. NAS uses its own authentication process or a separate authentication server running on the network.
The other component need is client software. Those employees who want to use the VPN from their computers will require software on those computers that can establish and also maintain a connection to the VPN.




2 comments:

  1. Hello!

    I feel that your post is easy to understand and the idea for each paragraphs flows very nicely. your post can be further improved by providing examples on how it works and perhaps the advantages + disadvantages of both site-to-site VPN and Remote Access VPN

    Overall, goodjob! :)

    Hetty

    ReplyDelete
  2. Hi

    Good post, very information based explanations while including a few exmaples to help us know more about VPNs as we have learnt in the past year. Thanks for giving me my slot back u smart smart guy. Other than that the post was excellent, fantastic and everything sweet. Thanks for the post again.

    Xudong

    ReplyDelete