This article applies to PRTG Network Monitor 16 or later

Filter Rules for Custom Packet Sniffing, xFlow, or IPFIX Sensors

Note: For details (i.e., additional rules), please see PRTG Manual: Filter Rules for xFlow, IPFIX and Packet Sniffer Sensors.

Filter rules are used for the include, exclude and channel definition fields of custom packet sniffer, NetFlow, sFlow, jFlow, and IPFIX sensors.

Filter rules are based on the following format:

field[filter]

Valid fields are:

• IP
• Port
• SourceIP
• SourcePort
• DestinationIP
• DestinationPort
• Protocol (values: TCP, UDP, ICMP, OSPFIGP or any number)
• ToS
• DSCP

Additional Packet Sniffer Fields:

• MAC
• SourceMAC
• DestinationMAC
• EtherType (values IPV4, ARP,RARP,APPLE, AARP,IPV6 ,IPXold, IPX or any number)
• VlanPCP
• VlanID
• TrafficClass
• FlowLabel

Additional NetFlow v5 / jFlow fields:

• Interface
• ASI
• InboundInterface
• OutboundInterface
• SourceASI
• DestinationASI

Additional NetFlow v9 and IPFIX fields:

• Interface
• ASI
• InboundInterface
• OutboundInterface
• SenderIP
• SourceASI
• DestinationASI
• MAC
• SourceMAC
• DestinationMAC
• Mask
• SourceMask
• DestinationMask
  • Note: 'Masks' represent subnet masks in the form of a single number ('number of contiguous bits')
• NextHop (IP address)
• VLAN
• SourceVLAN
• DestinationVLAN
  • Note: 'VLANs' represent a VLAN identifier

Additional sFlow fields:

• Interface
• InboundInterface
• OutboundInterface
• SenderIP
• MAC
• SourceMAC
• DestinationMAC

Data Formats:

• IP fields support wildcards (*), range (10-20) and hostmask ( /10, /255.255.0.0) syntax (all IPv4 only), as well as DNS names.
• Number fields support range (80-88) syntax.
• Protocol and EtherType fields support numbers and a list of predefined constants.

Samples:

SourceIP[10.0.0.1]
SourceIP[10.*.*.*]
SourceIP[10.0.0.0/10]
DestinationIP[10.0.0.120-130]
DestinationPort[80-88]
Protocol[UDP]

Complex expressions can be created using parentheses and and/or/not:

Protocol[TCP] and not (DestinationIP[10.0.0.1] or SourceIP[10.0.0.120-130])

See also

• How do the channel definitions for custom Packet Sniffing, xFlow, and IPFIX sensors work?
• Which syntax can I use to define IP ranges in PRTG's probe and xFlow sensor settings?
• PRTG Manual: Filter Rules for xFlow, IPFIX and Packet Sniffer Sensors