IPsec and SSL VPN

• IPsec VPN

Internet Protocol Security (IPsec) is a secure network protocol suite that authenticates and encrypts the packets of data to provide secure encrypted communication between two computers over an Internet Protocol network. It is used in Virtual Private Networks (VPNs).

IPsec VPN Overview (Juniper)

Deploying Remote-Access SSL & IPsec VPNs - Cisco (PDF)

▶ IPsec VPN vendors

▷ Cisco

▷ Juniper

▷ Palo Alto Networks (PAN)

• SSL VPN

Secure Sockets Layer (SSL) VPN is a technology that provides remote-access VPN capability, using the SSL function that is already built into a modern web browser.

SSL VPN allows users from any Internet-enabled location to launch a web browser to establish remote-access VPN connections, thus promising productivity enhancements and improved availability, as well as further IT cost reduction for VPN client software and support.

Transport Layer Security (TLS) is the successor protocol to SSL. TLS is an improved version of SSL.

Guide to SSL VPNs (NIST SP 800-113, PDF)

▶ SSL VPN vendors

▷ Cisco
▷ Array Networks

▷ Dell SonicWALL

▷ Barracuda

▷ OpenVPN