You can find MRTG - Multi Router Traffic Grapher application using this tool.
MRTG - Multi Router Traffic Grapher will monitor SNMP network devices and draw pretty pictures showing how much traffic has passed through each interface. Routers are only the beginning. MRTG is being used to graph all sorts of network devices as well as everything else from weather data to vending machines. MRTG is written in perl and works on Unix/Linux as well as Windows and even Netware systems. MRTG is free software licensed under the Gnu GPL.
An attacker might use the disclosed information to harvest specific security vulnerabilities for the version identified.
Only use components that do not have known vulnerabilities, only use components that when combined to not introduce a security vulnerability, and ensure that a misconfiguration does not cause any vulnerabilities.