Which port is commonly used for HTTP traffic?

HTTP traffic typically uses port 80 as its standard communication channel. This protocol is foundational for web browsing and enables the transfer of hypertext documents on the internet. When a client, such as a web browser, sends a request to a server for a webpage, it usually does so over port 80 unless specified otherwise.

The other ports mentioned serve different purposes:

• Port 25 is traditionally used for SMTP (Simple Mail Transfer Protocol), which is the protocol used for sending emails.

• Port 443 is the default port for HTTPS (Hypertext Transfer Protocol Secure), which is the secure version of HTTP that encrypts data for secure transmissions.

• Port 3306 is used by MySQL for database management, primarily for communication between a MySQL client and the MySQL server.

Understanding these port assignments is crucial for network configuration, security, and troubleshooting purposes.