Access to DCS services is restricted to those systems located behind the UCAR network security perimeter. Systems with (UCAR interior) firewalls located between them and the DCS Servers must have the appropriate firewall entries made to permit certain TCP traffic to pass between the DCS Client system and the DCS Servers. For systems that do not meet these requirements, MSS file access via the MSS FTP Server may be an alternative.

DCS is supported for a variety of Unix systems. See the DCS 4.0 Support Policy for more details. See the Installation Instructions for details on installation and configuration of the DCS commands including on how to configure them for use from behind an UCAR internal firewall.