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May I ask why can I not block all https traffic in iptables?
I tried:
OUTPUT --dport 443 -j DROP
And even:
OUTPUT --sport 443 -j DROP
None of this works. Https webpages are still perfectly accessible. WHY? What kind of PEBKAC have I managed to subject myself to this time?
2Just an FYI, any website with HSTS (including google) will not be downgraded to HTTP, the request will just fail. Blocking HTTPS will likely annoy many users. – Jon – 2016-05-18T23:11:43.767