Tip

SSL VPNs and client-application authentication

In a recent SearchSecurity webcast, speaker Lisa Phifer, vice president and owner of consulting firm Core Competence, addressed technological developments in virtual private networks. Here Lisa answers a user-submitted question that she didn't have time to answer during the broadcast. If you missed our webcast, New directions in VPNs, or would like to review it, you may listen to the recorded

    Requires Free Membership to View

webcast on-demand.


Please address the impact of SSL VPNs on client-application authentication, where the application attempts to use SSL certificate-based user authentication. Since SSL VPNs terminate the user's SSL session, the application is no longer able to authenticate the user on the basis of his SSL certificate. SSL VPNs appear to preclude client certificate-based authentication.

Authentication capabilities depend upon the product, but there are SSL VPN products that support client-side certificate authentication to back-end applications. Any proxy can disrupt the end-to-end nature of communication between a client and server. However, some products, like Whale Communications' e-Gap and Aventail's EX-1500, do provide single sign-on capabilities for all Intranet servers protected by the SSL VPN gateway. The proxy can relay challenge/response authentication between the client and server, or (in your case) relay client-side certificate authentication.



MORE INFORMATION ON VPNs:

This was first published in March 2004

There are Comments. Add yours.

 
TIP: Want to include a code block in your comment? Use <pre> or <code> tags around the desired text. Ex: <code>insert code</code>

REGISTER or login:

Forgot Password?
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy
Sort by: OldestNewest

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to:

Disclaimer: Our Tips Exchange is a forum for you to share technical advice and expertise with your peers and to learn from other enterprise IT professionals. TechTarget provides the infrastructure to facilitate this sharing of information. However, we cannot guarantee the accuracy or validity of the material submitted. You agree that your use of the Ask The Expert services and your reliance on any questions, answers, information or other materials received through this Web site is at your own risk.