Piwik 0.5.5 out. New plugin: AnonymizeIP

I run piwik, the Open Source web analytics tool on the webschuur server to track some clients' sites and this site.

Piwik released a new, mostly bugfix, version. But one particular new feature, the addon "AnonymizeIP" struck me as very usefull:

Anonymize visitor IP addresses to comply with your local privacy laws/guidelines.

piwik plugin screenshot

Very little more to be found about this, unfortunately, so I dove into the code. The file global.ini.php contains a setting

; number of octets in IP address to mask, in order to anonymize a visitor's IP address; if the 
AnonymizeIP plugin is deactivated, this value is ignored; for IPv4 addresses, valid values are 
0..4"

Setting this to e.g. 3 will mask the addresses, so that you store only the first IP-block is kept. For example, the IP adress from Google (one of the many) 74.125.77.147 will be stored as 74.000.000.000 when set to 3.

I have set this to 2. So I can still guess the approximate region, but can never find out who you are exactly. Great for privacy, yet still somewhat usefull for me.

This article was published on webschuur.com. And migrated to this blog.

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About the author: Bèr Kessels is an experienced webdeveloper with a great passion for technology and Open Source. A golden combination to implement that technology in a good and efficient way. Follow @berkes on Twitter. Or read more about Bèr.

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