NETGEAR ProSafe SSL VPN Concentrator 25 SSL312 Reference Manual
6.Check the Require client digital certificates checkbox to force users to supply a valid digital certificate before granting access. The CNAME of the client certificate must match the user name that the user supplies to log in and the certificate must be generated by a certificate authority (CA) that is trusted by SSL VPN Concentrator.
7.Click Apply to update the configuration. Once the domain has been added, the domain will be added to the table on the Domains screen.
Active Directory Authentication
To configure Windows Active Directory authentication:
1.Click Add Domain. An Add Domain window will display.
Note: Of all types of authentication, Active Directory authentication is the most error 
prone. If you are unable to authenticate using Active Directory, please read the
troubleshooting procedure at the end of this section.
2.Select Active Directory from the Authentication Type menu. Fields for Active Directory configuration will display.
Domains and Layouts |