# Customizing System SSL

To use a secured environment for EMS ESB in Substation ES, you must be familiar with the IBM System SSL environment. To ensure that the System SSL environment meets your local security requirements, you have to customize the existing System SSL environment.

The following three sections includes a broad outline of steps to take or items to check when reviewing the System SSL environment. However, every system has unique requirements that cannot be fully addressed in this outline.

Note: This outline does not replace the documentation and guidance supplied by IBM.

Additionally, this outline is limited to IBM Security Server (RACF). If you want to use an equivalent security product from another vendor, you can see the related product documentation for guidance.

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