There are two main technologies used to implement tunnelless VPNs: Secure Sockets Layer (SSL) and Group Encrypted...
By submitting your email address, you agree to receive emails regarding relevant topic offers from TechTarget and its partners. You can withdraw your consent at any time. Contact TechTarget at 275 Grove Street, Newton, MA.
Of the two technologies, you're more likely to encounter SSL-based VPNs on today's networks, only because GET is a relatively new technology. SSL-based VPNs offer remote users secure access to internal applications without the use of an IPsec VPN client. SSL VPNs are most commonly used to share Web applications. In this case, users connect to the SSL VPN, authenticate and then gain access to selected applications though the VPN server, which acts as a proxy. Generally, this setup is more secure than that of an IPsec VPN, as it allows you to strictly control a user's access without granting direct contact to the underlying network. Many SSL VPNs also offer the download of a browser-based client that allows more extensive access to the protected network, including the use of client/server applications. In this case, the security risks are the same as an IPsec-based VPN.
Group Encrypted Transport (GET) is a relatively new technology that's proprietary to Cisco Systems Inc. Networks running GET encrypt the payload portion of a packet only, allowing the address information to remain unencrypted. This provides enhanced networking functionality, permitting the use of quality of service (QoS) to prioritize encrypted traffic. However, GET also exposes VPN users to the risk of traffic analysis, as eavesdroppers may be able to determine their usage patterns from the unencrypted portion of the packet. For more details on GET, you may wish to read more about the recent debut of Cisco's tunnelless GET VPN technology on our sister site, SearchNetworkingChannel.com.
Dig Deeper on SSL and TLS VPN Security
Related Q&A from Mike Chapple
It's hard to tell if a company is a HIPAA business associate, but a closer look at HHS documents helps. Expert Mike Chapple discusses a specific case...continue reading
There was speculation in the security world over whether the FedRAMP certification would be helpful or not. Now that it's in full use, Mike Chapple ...continue reading
Medical device companies are part of the health industry, but does that make them a HIPAA covered entity or business associate? Expert Mike Chapple ...continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.