There are several factors to consider when figuring out whether to implement site-to-site VPN services. In some cases, typical IPsec is sufficient for communication between two or more locations. However, there are a few considerations that may drive a company to use VPN connections instead:
* The number of locations
* Business size
* The distance between each location
* The resources the locations have to share with each other
In most cases, a site-to-site VPN is a good solution if your business consists of several locations, each with employees that need to share resources provided by the main office. If you use a site-to-site VPN in this kind of situation, you can ensure that all employees have secure access to the same resources.
For example, suppose you have a company based in New York, but it has several branch offices, one in Shanghai, one in France, and another in Switzerland. Each location has between 15 and 20 employees. The company’s email system is housed on a central server. You also have a data server that holds important marketing collateral and proprietary information.
If you use a site-to-site VPN, not only can every employee access the same resources but the data is also encrypted, keeping it safe from attackers who may want to exploit it.
