Port

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A port is a logical channel that network services use to communicate. For example:

• Port 80 – Standard web traffic (HTTP).
• Port 443 – Secure web traffic (HTTPS).
• Port 25 – Email (SMTP).

Why it matters:

• Ports allow multiple services to run on the same device.
• Firewalls use ports to block or allow specific types of traffic.

Pro tip: If an app can’t connect, make sure the required port is open.

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