https://www.paessler.com/Download_PRTG/30_Day_Trial
赞助PRTG includes SNMP, NetFlow and packet sniffing, and monitors bandwidth & traffic. Monitor all of a network device’s active ports, as well as its CPU and RAM with PRTG.
Easy and fast setup · All-in-one monitoring · Support Availability 24/7 · ISO 9001 Certified
Service catalog: Network Monitoring, Bandwidth Monitoring, Server Monitoring