You can download the latest OES 23.4 ISO image files from Software Licenses and Downloads (SLD). For more information, see Preparing Physical Media for a New Server Installation in OES 23.4: Installation Guide.
The OES 23.4 Updated ISO includes fixes for the following critical defects:
Firewall: After upgrading from the earlier OES versions to OES 23.4, the firewall is enabled by default.
Firewall ports:After upgrading from the earlier OES version to OES 23.4, the firewall ports are disabled by default.
SUSE Xen Hypervisor: Upgrading from the earlier OES versions to OES 23.4 in a SUSE Xen Hypervisor environment results in eDirectory failure.
Splitlock: The splitlock detect is enabled by default which can result in cluster crash during cluster resource migration or while making clusters online.
DSFW Server Error: Upgrading from the earlier OES versions to OES 23.4 fails, when the eDirectory tree administrator password is not the same as the domain administrator password.