The UTDCv17cdll.zip file you have requested: Tools and Utilities / UTDC v17 (Server & Client) - 135.49kb is not available. Perhaps try browsing all files for the game Unreal Tournament and upload any files you want to share or are missing. This is the only information we could locate:
This is an anti-cheat created for UT99 and is also used for Tactical Ops: AoT (3.4). Has everything you'll need to equip your server with this. And has the files required to use it as a client only.