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2.3. Software Requirements

Most of the packages that an IdM server depends on are installed as dependencies when the IdM packages are installed. There are some packages, however, which are required before installing the IdM packages:
  • Kerberos 1.10. This is installed as a dependency if it is not already installed.
  • The bind and bind-dyndb-ldap packages for DNS. The bind package is installed as a dependency if it is not already available; however, the bind-dyndb-ldap package must be explicitly installed first or attempting to configure an IdM server with DNS support will fail.


Due to CVE-2014-3566, the Secure Socket Layer version 3 (SSLv3) protocol needs to be disabled in the mod_nss module. You can ensure that by following these steps:
  1. Edit the /etc/httpd/conf.d/nss.conf file and set the NSSProtocol parameter to TLSv1.0 (for backward compatibility) and TLSv1.1.
    NSSProtocol TLSv1.0,TLSv1.1
  2. Restart the httpd service.
    # service httpd restart