The document introduces Ondasca, an on-demand network data set creation application designed to enhance the effectiveness of network intrusion detection systems (NIDS) by generating customized, labeled data sets. It addresses the limitations of existing data sets, which are often outdated and not reflective of current network traffic and threats. Ondasca allows users to capture and process network packets in real-time or from existing files, providing flexibility and customization to researchers and network managers.