Anomaly based IDS tools are expensive. Signature based IDS tools only work if a signature exists. Using a simple Bro script, organizations without large security budgets can generate alerts for anomalous packets IF they have a complete baseline of the ports and protocols their devices use. I wrote Bropy to simplify the process of generating a network baseline to be used with Bro. With this tool, small security teams can generate network baselines for systems in a matter of minutes, rather than hours or days. Armed with the data generated by Bropy, organizations have the option to either continue to receive alerts on anomalous communication, or use the data to generate firewall configurations to enhance network security. Written in Python, Powered by Bro