The Red Hat/CentOS/Fedora distros are very paranoid. The HTTP and HTTPS inbound ports are blocked by default. However, if I'm not mistaken, when you install webserver packages like Apache httpd and nginx the installer adds exceptions for the HTTP(S) ports. I could be wrong or at least out of date, so it's a good idea to check.
Most outbound requests are going out through a randomly-selected high-numbered port, so there usually aren't any blocking rules on the OUTPUT firewall chain.
When it comes to destroying a civilization, gas chambers cannot hold a candle to echo chambers.
Yeah. What he said. Totally. Wait. What? Sorry, I was looking at this tiny ad:
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