AysMon

AysMon (Are You Serving Monitor) is a multi-purpose utility for monitoring system resources associated with network services.

System administrators and other expert users benefit from continuous monitoring of critical aspects of network services of the host system. End-users will find AysMon an effective way to monitor throughput on their DSL, Cable, PPP, or other network connections as well as providing a friendly display of disk space usage and key open network ports. The latter is important since you may have a network service running that unintentionally opens your system to attack by hackers. AysMon enables to see at a glance if this is the case.