What is the standard port number for HTTP?

The standard port number for HTTP is indeed 80. HTTP, which stands for Hypertext Transfer Protocol, is the foundational protocol used for transmitting web pages on the internet. By convention, web servers listen for requests from clients on port 80, allowing browsers and other applications to retrieve content over the web.

Port numbers are a critical component in network communications, as they help to differentiate between different types of traffic on the same IP address. For example, while HTTP traffic uses port 80, HTTPS (HTTP Secure), which is the secure version of HTTP, utilizes port 443 for encrypted communication.

In this context, understanding port numbers is essential for network configuration, firewall settings, and troubleshooting connectivity issues. Port 80 as the designated standard for HTTP helps ensure that web clients and servers can communicate effectively without the need for manual port specification on each connection.