SLOP is an engine for the collection of and reporting on logs from various network based devices such as firewalls, switches, and Web servers. It includes support for Checkpoint Firewall-1 firewalls and Cisco 2900 and 3500 series switches. It features storage of logs in an SQL database, dynamically generated Web-based graphic reports of statistics from devices, Web-based viewing of raw logs, with sorting and color highlighting, and an object-oriented framework for adding "modules" to support other devices.