For hardening traditional WAS ND Version 9.0.x server environments in alignment with NIST SP800-53 we now have a Department of Defense Security Technical Implementation Guide. This provides a set of configuration hardening steps to ensure you have a secure configuration in place for WAS ND for production environments. These are broken into 3 categories.
1) Category 1 (High)
2) Category 2 (Medium)
3) Category 3 (Low)
It's highly recommended that WAS ND customers review these recommendations and follow the associated steps to lock down your environments.
We also have an extensive set a materials that provide hardening guidance for traditional WAS ND environments located here. Note this material is more relevant to WAS V7 and V8/8.5.
Traditional WAS Hardening Part 11210_lansche-advanced-hardening-1.pdfTraditional WAS Hardening Part 21303_lansche-advanced-hardening-2.pdf
For questions regarding this information I can be contacted at firstname.lastname@example.org.