What does this log message mean? Should I be concerned?
Aug 26 09:08:28:731 [5708] 0 Controller: --------------------------------------------------------------------------------------------------------
Aug 26 09:08:28:731 [5708] 0 Controller: ----- Robot controller 9.33HF4 [Build 9.33HF4.1858, Aug 25 2021] started -----
...
Aug 26 09:09:01:440 [5708] 0 Controller: login - unauthorized probe (robotip/port)
This is caused by the ppm probe. It is benign.
The reason this happens is a sort of race condition between threads in ppm, and the first login attempt comes before the probe is otherwise fully initialized, but the probe self-corrects this.
The first login fails with the "unauthorized probe" but within a minute or so - sometimes immediately depending on when the initialization catches up - then the probe fully initializes, and repeats the login which is then successful and allows the probe to continue normal operation. This can be seen at loglevel 5:
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Aug 31 05:24:47:723 [9112] 5 Controller: RREQUEST: login <-10.74.32.179/53664 h=83 d=189 fd=1004
Aug 31 05:24:47:723 [9112] 5 Controller: head mtype=100 charset=windows-1252 cmd=login seq=1 ts=1630412687
Aug 31 05:24:47:723 [9112] 5 Controller: data mode=1 nimcprid=466831 prid= crdta=HEX(112):4f71afc227f10b1494ef6838acf7773e type=1 crlen=98
Aug 31 05:24:47:723 [9112] 2 Controller: login from 10.74.32.179/53664 type=1 mode=1
Aug 31 05:24:47:723 [9112] 0 Controller: login - unauthorized probe (10.74.32.179/53664)
Aug 31 05:24:47:776 [9112] 5 Controller: RREQUEST: login <-10.74.32.179/53671 h=83 d=194 fd=1016
Aug 31 05:24:47:776 [9112] 5 Controller: head mtype=100 charset=windows-1252 cmd=login seq=1 ts=1630412687
Aug 31 05:24:47:776 [9112] 5 Controller: data mode=1 nimcprid=466831 prid=ppm crdta=HEX(112):4f71afc227f10b1494ef6838acf7773e type=1 crlen=102
Aug 31 05:24:47:776 [9112] 2 Controller: login from 10.74.32.179/53671 type=1 mode=1
Release : 20.3
Component : UIM - PPM
There is no impact and this error message is transient and not cause for concern.