Network Bandwidth Monitoring

IP Flow Meter (ipfm) is a bandwidth analysis tool which outputs a list of hosts with their respective bandwith usage. IPFM uses libpcap and aims to be portable. It features multi-filtering rules and name resolving, and runs on Linux, FreeBSD, and IRIX.

InfoWatcher is a system and log monitoring program written in Perl. The major components of InfoWatcher are SLM and SSM. SLM is a log monitoring and filter daemon process which can monitor multiple logfiles simultaneously, and SSM is a system/process monitoring utility that monitors general system health, process status, disk usage, and others. Both programs are easily configurable and extensible.