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HEC stopped working

corti77
Contributor
‎09-25-2023 07:07 AM

Hi,

I have an issue with our HEC service in our Splunk standalone installation (9.0.6). It simply does not complete the TCP connection for some unknown reason.

Local FW is OFF. Ping works but TCP does not complete the connection.

corti77_0-1695650916542.png

 

everything else works normally. I can connect to Splunk and search data, and universal forwarders report commonly (no deployment errors)... only HEC does not work as it should.

HEC global settings

corti77_1-1695650700127.png

from wireshark, the TCP retransmition can be seen but I can't find the root cause for it.

corti77_0-1695651461233.png

 

any idea of what could be happening?

many thanks.

 

 

 

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