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Can't stop Firefox background connections #509
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Using tcpdump I notice that Firefox continues to make background connections regardless of the fact that I use this user.js. I even tried the additional privacy settings suggested at https://wiki.archlinux.org/index.php/Firefox/Privacy (except those for omni.ja) but still, the moment I start Firefox (which shows nothing but about:blank tab) tcpdump shows:
...
IP mycomputer.53304 > server-143-204-209-52.fra53.r.cloudfront.net.https: tcp 31
IP mycomputer.53302 > server-143-204-209-52.fra53.r.cloudfront.net.https: tcp 24
IP mycomputer.53302 > server-143-204-209-52.fra53.r.cloudfront.net.https: tcp 0
IP mycomputer.53302 > server-143-204-209-52.fra53.r.cloudfront.net.https: tcp 0
IP mycomputer.53304 > server-143-204-209-52.fra53.r.cloudfront.net.https: tcp 0
IP mycomputer.53304 > server-143-204-209-52.fra53.r.cloudfront.net.https: tcp 0
IP mycomputer.53304 > server-143-204-209-52.fra53.r.cloudfront.net.https: tcp 0
IP mycomputer.53304 > server-143-204-209-52.fra53.r.cloudfront.net.https: tcp 0
IP mycomputer.53304 > server-143-204-209-52.fra53.r.cloudfront.net.https: tcp 0
IP mycomputer.53302 > server-143-204-209-52.fra53.r.cloudfront.net.https: tcp 0
IP mycomputer.38710 > server-52-85-121-65.bud50.r.cloudfront.net.https: tcp 0
IP mycomputer.38710 > server-52-85-121-65.bud50.r.cloudfront.net.https: tcp 0
IP mycomputer.38710 > server-52-85-121-65.bud50.r.cloudfront.net.https: tcp 513
IP mycomputer.38710 > server-52-85-121-65.bud50.r.cloudfront.net.https: tcp 0
IP mycomputer.38710 > server-52-85-121-65.bud50.r.cloudfront.net.https: tcp 0
...
Why is this happening? (even without extensions)
I don't want to announce to Amazon (or anyone else) "Hey, I have just started my browser, here is my IP address (personal data as per GDPR) for your purposes". I want to connect only to the websites I explicitly type in the URL bar.