Which default ports should you open in your firewall to allow encrypted web browsing and outgoing email?
A) tcp/80 and tcp/25
B) tcp/25 and tcp/110
C) tcp/443 and tcp/110
D) tcp/443 and tcp/25
E) OPEN ALL THE PORTS
The answer: D) tcp/443 and tcp/25
Encrypted web communication is usually seen over TCP port 443, and outgoing email uses Simple Mail Transfer Protocol (SMTP) over TCP port 25.
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Want to know more? Watch “Common Ports.”The fundamental languages used over our computer networks are a standard set of protocols that are used around the world. In this video, you’ll learn about protocols and the set of standards associated with TCP/IP. You’ll also learn the essentials of TCP/IP and how subnetting can be used to build today’s modern networks. |
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