Devices stopped suddenly

Hey,

I;m using your tool for the last year, thank you very much for that! Using 3 gps tracker, but since the 16th it's not working any more.

The last messages are:

2025-10-16 15:07:22  INFO: [Te350f563] connected
2025-10-16 15:07:26  INFO: [Te350f563: watch < 62.93.143.67] [SG*9180015180*0087*UD2,161025,170201,A,51.475347,N,4.672237,E,62.949,297,0,10,100,90,0,50,00000000,3,1,204,8,3340,12949,147,3340,14764,146,3340,45375,141,,00]
2025-10-16 15:07:26  INFO: [Te350f563] id: 9180015180, time: 2025-10-16 17:02:01, lat: 51.47535, lon: 4.67224, speed: 34.0, course: 297.0
2025-10-16 15:07:28  INFO: [Te350f563: watch < 62.93.143.67] [SG*9180015180*0077*UD2,161025,170400,A,51.492192,N,4.680358,E,74.635,026,0,10,70,90,0,50,00000000,2,1,204,8,3340,45826,141,3340,45375,133,,00]
2025-10-16 15:07:28  INFO: [Te350f563] id: 9180015180, time: 2025-10-16 17:04:00, lat: 51.49219, lon: 4.68036, speed: 40.3, course: 26.0
2025-10-16 15:07:32  INFO: [Te350f563: watch < 62.93.143.67] [SG*9180015180*0078*UD2,161025,170559,A,51.512262,N,4.696360,E,33.132,017,0,10,100,90,0,50,00000000,2,1,204,8,3340,45827,151,3340,14764,138,,00]
2025-10-16 15:07:32  INFO: [Te350f563] id: 9180015180, time: 2025-10-16 17:05:59, lat: 51.51226, lon: 4.69636, speed: 17.9, course: 17.0
2025-10-16 15:08:01  INFO: [Te350f563: watch < 62.93.143.67] [SG*9180015180*0067*UD,161025,170759,A,51.519730,N,4.702995,E,8.9636,027,0,10,80,90,0,50,00000000,1,1,204,8,3340,45827,132,,00]
2025-10-16 15:08:01  INFO: [Te350f563] id: 9180015180, time: 2025-10-16 17:07:59, lat: 51.51973, lon: 4.70300, speed: 4.8, course: 27.0
2025-10-16 15:08:56  INFO: [T930fe754: watch < 62.93.143.75] [SG*9180019576*0009*LK,0,90]
2025-10-16 15:40:38  INFO: [Te350f563] disconnected
2025-10-16 15:40:38  INFO: Event id: 9180015180, time: 2025-10-16 15:40:38, type: deviceOffline, notifications: 0

And then these message come the next day

2025-10-17 18:38:25  INFO: [T433f3981: h02 < 45.79.207.110] fox a 1 -1 fox hello\n{\nfox.version=s:1.0\nid=i:1\nhostName=s:xpvm-0omdc01xmy\nhostAddress=s:192.168.1.125\napp.name=s:Workbench\napp.version=s:3.7.44\nvm.name=s:Java HotSpot(TM) Server VM\nvm.version=s:20.4-b02\nos.name=s:Windows XP\nos.version=s:5.1\nlang=s:en\ntimeZone=s:America/Los_Angeles;-28800000;3600000;02:00:00.000,wall,march,8,on or after,sunday,undefined;02:00:00.000,wall,november,1,on or after,sunday,undefined\nhostId=s:Win-99CB-D49D-5442-07BB\nvmUuid=s:8b530bc8-76c5-4139-a2ea-0fabd394d305\nbrandId=s:vykon\n};;\n
2025-10-17 18:38:42  WARN: [T433f3981] error - Connection reset - SocketException (...)
2025-10-17 18:38:42  INFO: [T433f3981] disconnected
2025-10-17 18:38:42  INFO: [T9b49c891] connected
2025-10-17 18:38:42  INFO: [T9b49c891: h02 < 45.79.207.110] 5a4700000005002b0e0100
2025-10-17 18:38:57  WARN: [T9b49c891] error - Connection reset - SocketException (...)
2025-10-17 18:38:57  INFO: [T9b49c891] disconnected
2025-10-17 18:38:57  INFO: [T66892c8f] connected
2025-10-17 18:38:57  INFO: [T66892c8f: h02 < 45.79.207.110] 009c00011a2b3c4d00010000010000000000000100000001ffff00010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
2025-10-17 18:39:13  WARN: [T66892c8f] error - Connection reset - SocketException (...)
2025-10-17 18:39:13  INFO: [T66892c8f] disconnected
2025-10-17 18:39:14  INFO: [T5587f5d9] connected
2025-10-17 18:39:14  INFO: [T5587f5d9: h02 < 45.79.207.110] 0300001611e00000000400c1020100c2020200c0010a
2025-10-17 18:39:26  WARN: [T5587f5d9] error - Connection reset - SocketException (...)
2025-10-17 18:39:26  INFO: [T5587f5d9] disconnected
2025-10-17 18:39:26  INFO: [Te5d56670] connected

And

2025-10-17 19:32:12  WARN: [T4cb8249c] error - readerIndex(1) + length(2) exceeds writerIndex(2): UnpooledByteBufAllocator$InstrumentedUnpooledUnsafeHeapByteBuf(ridx: 1, widx: 2, cap: 256) - IndexOutOfBoundsException (... < WatchProtocolDecoder:205 < ExtendedObjectDecoder:73 < ... < WrapperContext:102 < ... < WrapperInboundHandler:56 < ...)
2025-10-17 19:32:12  WARN: [T4cb8249c] error - readerIndex(1) + length(2) exceeds writerIndex(2): UnpooledByteBufAllocator$InstrumentedUnpooledUnsafeHeapByteBuf(ridx: 1, widx: 2, cap: 256) - IndexOutOfBoundsException (... < WatchProtocolDecoder:205 < ExtendedObjectDecoder:73 < ... < WrapperContext:102 < ... < WrapperInboundHandler:56 < ...)

Which seem like attacks from the outside?

I resetted my router and my traccar vm, but nothing seems to help.

Checked also my data bundle of my simcards (they have 1 shared bundle), but this seems also correct.
I connected a Android client, and this succesfully connects, and i see the location of my phone.

Any ideas or recommendations?

This evening i will put in my phone sim card into the gps device, and see if this helps.

Hi Michiel je woont in NL als ik naar je tracker data kijk.

First check if your Watch protocol port is accesible from the internet

It seems that your device stopt sending data.

Check the device config if the device is still pointed to your server.

So you might put the simcard in a mobile phone to check if internet is still working with phone wifi off (only enable mobile phone internet, gprs)

The error messages on h02 is noise like port scanning (happens all the time).

Yes, will do that. I suspect the data bundles on the devices.

https://www.traccar.org/troubleshooting/

sharing my troubleshooting steps for others.
I have data sim cards. Inserted one in a mobile phone. Installed a Ping / Traceroute android app. And tried to ping my traccar server.

Cant ping it, but I can ping from other sim cards / other providers.
So it seems that my datacard provider has blocked my traccar server's ip address. Will keep you updated if this the case.