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An old Cisco ASA 5540, PRTG 22.1.75.1594 and Netflow V9 sensor

Votes:

0

Hello PRTG team.
So, yesterday i've upgraded my PRTG installation from v17.3.33.2830 to 22.1.75.1594 and ran into a trouble.

Can't make PRTG to accept Netflow flows from our old Cisco ASA 5540.

So, what i've tried so far:

- Rebuilt all settings from zero, on PRTG, also on ASA.
- Used wireshark to check that flows are actually arriving to PRTG.
- Used Paessler's Netflow V9 Tester to check if flows aren't mailformed and decoded.
- Enabled storing stream data in sensor's settings to see if PRTG is perceiving them.

What i've got:
- Flows are coming (seeing it in wireshark).
- Flows aren't mailformed and are decoded (seeing it in Netflow tester).
- Flows ARE NOT perceived by PRTG (stream data .csv is empty, has only headers).

I could present wireshark dumps as well as screenshots of the netflow tester and stored stream data .csv

My e-mail is: [email protected]

asa cisco netflow

Created on Mar 31, 2022 1:06:49 PM

Last change on Apr 1, 2022 10:37:11 AM by Felix Wiesneth [Paessler Support]



1 Reply

Votes:

0

Hello Kiryl
Thanks for reaching us,
There are multiple things to check on the capture, on the sensor settings, and on the device. It could be something as simple as a timestamp not properly configured or something really complicated.
Since this would require deep analysis I would kindly suggest opening a Support ticket and attaching all the information mentioned above for further analysis.
Please make reference to this KB article. Cheers

Created on Apr 6, 2022 12:36:14 AM by Luis Quesada (Paessler Technical Support)




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