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Netflow: Custom Channel




I have created a new, user-defined Netflow sensor in the PRTG. In the sensor I have defined the following Channels:

(Protocol[UDP]) OR (Protocol[TCP])

Protocol[TCP] and (SourcePort[4443] or DestinationPort[4443])


Unfortunately, no Chanel "TEST", or "TEST1" is generated. In the top connections, however, I see some connections with the target port 4443. What am I doing wrong?

channel-configuration custom-sensor netflow

Created on Oct 10, 2017 10:12:18 AM

Last change on Oct 10, 2017 12:41:01 PM by  Luciano Lingnau [Paessler]

1 Reply

Accepted Answer



Hello Marco,
we appreciate your contact.

Please refer to:

The rules are processed top to bottom (the number does not matter) and the data is accounted to the first match.

The "problem" of your definition is that you're starting with a very generic rule (All TCP and All UDP), this way all data falls into the first channel. You should start with more specific filters and at the end more generic rules. For example:

Protocol[TCP] and Port[4443]

Protocol[UDP] and Port[4443]

(Protocol[UDP]) OR (Protocol[TCP])

Best Regards,
Luciano Lingnau [Paessler Support]

Created on Oct 10, 2017 12:45:06 PM by  Luciano Lingnau [Paessler]

Last change on Dec 2, 2021 10:27:30 AM by  Maike Guba [Paessler Support] (2,404) 2 1

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