SSL VPN vs IPSec VPN
Both SSL and IPSec are types of Transport Layer Security (TLS) protocols, and though both promote superior security for remote connections, they have distinct differences. SSL VPNs, for example, do not absolutely require an external software or hardware to use. Most modern computers already contain the required SSL VPN client programs to establish a secure connection with SSL, with a popular example being from the user’s browser on their PC to web servers, where website content is hosted (this is the HTTPS in the URL bar). By not requiring any additional installation or configuration, SSL VPN clients are more cost-effective as organizations don’t necessarily need to maintain expensive licenses or buy hardware. They’re also easier to use.
Additionally, SSL VPNs are more complementary to the user-centric network access model, meaning that users only gain access to network resources (largely SaaS applications such as Salesforce, Microsoft Azure, and others) that they absolutely need for their roles. SSL is preferred for this type of least-privilege, and more secure, promoting an access model that can establish encrypted tunnels to specific applications and not the entire network but also making it more simple to assign specific users a policy that fits their individual access needs.