A system administrator is tasked with allowing incoming connections to a web server hosted on Linux. The server needs to accept traffic on port 443. How should the administrator configure UFW to achieve this?
ufw deny 443/tcp
ufw allow 443/udp
ufw allow 443/tcp
ufw allow 80/tcp
The correct answer is ufw allow 443/tcp because it allows incoming TCP traffic on port 443, which is the standard port for HTTPS traffic. ufw allow 80/tcp is incorrect because it opens port 80 (HTTP), not 443. ufw deny 443/tcp explicitly blocks the required traffic. Finally, ufw allow 443/udp permits UDP on 443, whereas HTTPS relies on the TCP protocol.
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