OpenVPN and the SSL VPN Revolution
True SSL VPNs are beginning to appear in the market. One of the best, and definitely the least expensive, is the open source SSL VPN, OpenVPN.
IPSec VPNs are either too expensive or too difficult to use securely. IPSec is dense and contains too many options to be configured and administered securely by non-expert personnel. It also operates in kernel space providing the opportunity for catastrophic failure. OpenVPN rejects the complexity of IPSec by using the battle tested SSL/TLS protocol and cryptographic libraries to provide equal or better function in a simpler package. OpenVPN also operates in user-space increasing security and stability.
Many of the products that claim to be SSL VPNs are actually just SSL gateways operating under the guise of a true VPN. Many of these products open the unsuspecting user to serious security issues. OpenVPN is the first real SSL VPN to provide the same function and security as its IPSec predecessors.