Overview of the IPsec site-to-site VPN use case
Depending on the scenario, an IPsec site-to-site VPN may be a more appropriate solution than an IPsec remote access VPN.
An IPsec remote access VPN (RA VPN) provides users with a temporary encrypted connection, typically with corporate headquarters.
In contrast, an IPsec site-to-site VPN provides a permanent encrypted connection between two or more networks. So, companies commonly use site-to-site VPNs when they have multiple locations — such as branch offices and corporate headquarters — that need access to the corporate network on a regular basis.