Using Certificate-Based Authentication

Unless there is a security reason not to use a specific cipher, select all of the ciphers, except for none,MD5.

6. In the Encryption tab, click Save.

CAUTION

Avoid selecting the none,MD5 cipher because the server will use this option if no other ciphers are available on the client, instead of refusing the connection. The none,MD5 cipher is not secure because encryption does not occur.

6. Using Certificate-Based Authentication

Directory Server allows certificate-based authentication for the command-line tools (which are LDAP clients) and for replication communications. Certificate-based authentication can occur between:

An LDAP client connecting to the Directory Server.

A Directory Server connecting to another Directory Server by replication or chaining.

A single configuration parameter, nsslapd-certdir, in cn=config in dse.ldif lists the directory containing the key, certificate, and security files. The directory name should be unique and specific to the server. For example, the /etc/dirsrv/slapd-instance_namedirectory contains the key and certificate databases only for the Directory Server instance called instance_name. That directory will not contain key and certificate databases for any other server or client, nor will any of the key, certificate, or other security-related files for instance_name be located in any other directory.

NOTE

The Directory Server 8.0 no longer uses separate files for the key and certificate databases. With the Filesystem Hierarchy Standard, the certificate and key files have been consolidated into a single file, specified in the nsslapd-certdirparameter, and the key and certificate file is stored in the /etc/dirsrv/slapd-instance_namedirectory.

Previous versions of Directory Server used a single directory, /opt/redhat-ds/slapd-instance/alias, for all security-related files for all servers, and required a unique prefix, such as slapd-instance-, for the key, certificate, and security-related files. The Directory Server used the attributes

415

Page 435
Image 435
HP UX Red Hat Direry Server Software manual Using Certificate-Based Authentication, Encryption tab, click Save