https://www.paessler.com/Download_PRTG/30_Day_Trial
广告PRTG monitors your entire inbound/outbound network traffic & the status of your firewall. PRTG supports many firewall products: easily monitor them via SNMP or a predefined sensor.
All in one dashboard · Integrated Ticket System · All in one, no add-ons · All-in-one monitoring
Types: PRTG Network Monitor, PRTG Enterprise Monitor, PRTG Hosted Monitor