The Cisco CSS DNS is utilized to host the organizations authoritative records and DISA Computing Services does not support that host in its csd.disa.mil domain and associated high-availability server infrastructure.

The primary security concern with regard to the type of delegation discussed is that to implement this approach, an organization would have to migrate its authoritative records from a well-known DNS implementation with proven, tested security controls to a relatively new DNS implementation without similar controls. Therefore, this migration should only occur when the performance and availability advantages of CSS significantly outweigh the increased residual security risk of using a less mature technology.