Can t find what is blocking websites on my mac?

Anything pornography related or ad links i cannot connect just says error_refused_connect or whatever on mac Ive checked all firewall settings, turned on and off, router on and off, cleared cache, everything. Happens on safari and Firefox as well same virus. I remember accidentally installing certain software which... show more Anything pornography related or ad links i cannot connect just says error_refused_connect or whatever on mac Ive checked all firewall settings, turned on and off, router on and off, cleared cache, everything. Happens on safari and Firefox as well same virus. I remember accidentally installing certain software which I paid a lot of money for too accidentally, now I can t find it on my system and think it s what s causing it. How do repair this without ******* time machine.
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