From AET Data Consulting:
AET Tracer Pro is an award winning network tool collection. The collection includes: geographical positioning, trace route, IP tracer, e-mail tracer, interactive Netstat GUI, automated Whois GUI, automated abuse reporter, and a network scanner with seven different scan methods. If you have a firewall you can integrate it easily with AET Tracer Pro. You can import all unique addresses caught in the firewalls logs and trace and analyse them all at once with a single click.
AET Tracer Pro exists largely because of the need to track and report network abusers and to analyze and visualize whole networks or single network nodes. The program is an invaluable tool for network administrators and advanced Internet users, or for anyone who wants to track down an abuser and report the abuser to the correct authority.