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 2.GQ Geiger Muller Counter
 Hosting a private Geiger server

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T O P I C    R E V I E W
Flyjar Posted - 12/31/2021 : 07:34:11
Hi there,

I would like to connect my GMC-500+ to WiFi and then be able to view the readings over WiFi. However, I'd prefer to not use the World Map. Is there a way of hosting privately?

Thank you!
3   L A T E S T    R E P L I E S    (Newest First)
ullix Posted - 01/11/2022 : 05:41:00
@EmfDev: I am afraid this won't work. Read my comment above carefully.

You have a bug in the firmware, which requires a workaround.

EmfDev Posted - 01/10/2022 : 12:14:50
Hi Flyjar, you can also do it by changing the parameters from the device website and URL.
The device sends it as:
GET /'URL'?AID='USER_ID'&GID='Geiger_Counter_ID'&CPM='CPM'&ACPM='ACPM'&uSv='uSv' HTTP/1.1
Host: 'WEBSITE'
Connection: close
Accept: */*

ullix Posted - 01/01/2022 : 01:37:11
It is possible with a bit of a hack.

The upcoming version of GeigerLog will offer a way to establish a redirection of the 500+ counter data into GeigerLog. Problem is that the 500+ has a flaw and a bug, and you need a work-around. But you better do this only locally, as it introduces a security risk!

Here an excerpt from the manual of next GeigerLog 1.3:

Redirection for GMC counters

Deficiency – Port Number Problem: The firmware of a GMC counter forces the use of port=80. How­ever, port numbers 0 … 1024 are reserved for users with Admin rights, and for se­curity reasons it would be a bad idea to run GeigerLog as Admin, solely to open such a server port! Perhaps even in conflict with an active regular web server, which almost always also listens at port=80.

Bug – “Unsafe” Operation Problem: The GMC counter’s firmware form the URL in such a way, that modern servers reject their contact as a security issue. One can overcome this by explicitly putting an “Unsafe” into their configuration file 1). But which Web server Admin would convert their server in­tentionally into a security risk?

1) h**p://httpd.apache.org/docs/2.4/de/mod/core.html see HttpProtocolOptions

Then on the now unsafe server you can run PHP to handle the data as you like.

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