TrafMeter is a powerful IP traffic accounting and Network Monitoring utility
EditByBSEditor: TrafMeter is a powerful IP traffic accounting and Network Monitoring utility designed for administrators of small to medium size PC LANs. It makes easy to count custom IP packets and troubleshooting problems saving your efforts as a network administrator. The main TrafMeter idea is Capture all, Count only useful.TrafMeter provides a creating of counting rules for a single host, for a subnet, for a specific group of hosts such as for all hosts in your LAN or for all hosts not in your LAN. Moreover, it supports a traffic accounting per any IP protocol (ICMP, TCP, UDP, GRE, ESP, AH, L2TP) with splitting traffic per port numbers (only for TCP and UDP). TrafMeter allows to visualize in realtime a traffic activity on the graphic charts so you will be able to see which user is using the Internet connection most of all. The traffic counters or the custom packet headers can be stored in a database providing the ability to build various traffic reports or traffic traces per month or/and per day. An exchanging data Between TrafMeter and the database is doing by means of ADO interface that allows to write the traffic counters into the most popular databases (Microsoft SQL Server, Oracle, MySQL). TrafMeter is designed to be running as a normal application, started via the Windows Start menu. However, you can start TrafMeter as a Windows NT/2000/XP service using freeware utility FireDaemon. TrafMeter contains a simple, easy to understand user interface and a manual.
features

Unlimited number of filters for captured traffic, defining network packets which are used for tracking/reporting.
Creation of rulesets for various monitoring purposes. The rulesets can be used for single hosts, subnets, as well as specific groups of hosts - i.e. all hosts in/not in your LAN, specific IP protocols (ICMP,TCP,UDP,OSPF,etc).
Real-time presentation of traffic activity via graphical charts. Each filter is represented by a unique color, which allows the webmaster and/or administrator you can free download TrafMeter 8.5 now.