A VPN (Virtual Private Network) is a private network that uses a public network such as the Internet to connect remote users or sites together. Virtual Private Networks used in businesses accomplish this by using virtual connections that are routed through the Internet from the remote site or an employee to the business’s private network. By implementing this, companies can, therefore, connect with its employees all around the world with a quick, reliable, and protected the method of sharing information. Virtual Private Networks also provide enhanced security by means such as encryption. Virtual Private Networks can offer a business greater flexibility for remote offices, improved security, savings in time and cost for employee’s commutes, better reliability, and also offer enhanced scalability as a Virtual Private Network can be easily extended as needed.
A Site-to-Site Virtual Private Network can be Intranet or Extranet based.
Intranet-based Site to Site VPNs enables multiple remote locations to establish secure connections with each other and act as a single network. An example of when this would be used would be with a network that spans several different buildings that needs access to a data center and needs secure access through strong encryption, through private lines. This type has high-bandwidth capabilities and performance.
Extranet-based Site to Site VPNs would allow numerous different companies in remote locations to be able to work in a shared environment. This form is more reliable and easily manageable. This form can use multiple network types.
Remote-Access Virtual Private Networks are also sometimes called Virtual Private Dial-Up Networks (VPDN). These networks are useful when users need remote access to a network. A company’s data in this type of VPN can, for example, be accessed remotely through a third-party service provider. AN example of when this type of VPN would be used would be if a company’s employees in remote locations wished to connect their laptops to the corporate LAN.
Pros and Cons of VPNs-
Pros- High security when compared to other forms of remote communications, lower costs, higher scalability, and higher flexibility of compatible devices.
Cons- More complex design and security configuration, Reliability can be an issue, can cause issues with incompatibility with different infrastructures, possible security problems with the use of wireless devices.
Banks, Ethan. “4 Types of VPNs and When to Use Them”. Auvik. Auvik.com. Web. 20 Jan 2015. Retrieved 8 Aug 2017.
“The Pros and Cons of Using a Virtual Private Network.” Thrive. www.Thrivenetworks.com. Web. 28 July 2011. Retrieved 8 Aug 2017.