googerteller/README.md
2022-08-22 13:23:14 +02:00

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# googerteller
audible feedback on just how much your browsing feeds into google
By bert@hubertnet.nl / https://berthub.eu/
## How to compile
First install libpcaudio (libpcaudio-dev), then:
```
cmake .
make
```
## How to run:
```
sudo tcpdump -n -l dst net 192.0.2.1/32 $(for a in $(cat goog-prefixes.txt); do echo or dst net $a; done) | ./teller
```
And then cry.
## Problems
If tcpdump complains about `Warning: Kernel filter failed: Cannot allocate memory`, try
this first:
```
sudo sysctl net.core.optmem_max=204800
```
## Data source
The list of Google services IP addresses can be found on [this Google
support page](https://support.google.com/a/answer/10026322?hl=en).
Note that this splits out Google services and Google cloud user IP
addresses.