In order to install and work with PRTG Network Monitor you need:
More information as well as detailed requirements for monitoring with SNMP, NetFlow, and Packet Sniffing can be found in our PRTG 7 Detailed System Requirements.
As a rule of thumb an average PC/server built in the year 2007 or later should be able to monitor 1,000 sensors with ease (some exceptions for SNMP V3, WMI and packet sniffing apply). For larger installations please refer to our knowledgebase article Planning Large Installations of PRTG Network Monitor 7.
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