Perceptive Software recommends using LDAP authentication in Perceptive Content for authenticating users. Using LDAP authentication, Perceptive Content authenticates to an LDAP server using the LDAP Simple Bind method. The Perceptive Content Server attempts a "bind" to the LDAP server using the credentials provided by the user. In addition to simple bind, Perceptive Content also supports LDAP authentication using simple bind over SSL (Secure Sockets Layer). SSL is a protocol used for transmitting documents through the Web; by default SSL connections start with https: instead of http:. Also, you can use multiple LDAP servers to authenticate against.