https://www.paessler.com/Download_PRTG/30_Day_Trial
赞助PRTG monitors the entire network: speed, traffic, uptime, servers, routers, switches, etc. PRTG uses SNMP, packet sniffing, WMI, NetFlow and offers more than 200 sensor types.
ISO 9001 Certified · Support Availability 24/7 · Integrated Ticket System · Easy and fast setup
Service catalog: Network Monitoring, Bandwidth Monitoring, Server Monitoring