Port 80 is the port number assigned to commonly used internet communication protocol, Hypertext Transfer Protocol (HTTP). It is the port from which a computer sends and receives Web client-based communication and messages from a Web server and is used to send and receive HTML pages or data.

Solved: HTTPS Port 443 - Cisco Community HTTPS Port 443 I do not have much experience with firewall side of things, there for I had a question with regards to what I am trying to do. I have enabled Direct Access on Windows Server 2012, for DA to work it uses HTTPS port 443. Nov 15, 2015 · In 1991, Tim Berners-Lee issued the first version of HTTP in a document where he stated: Then in July of 1992, RFC1060 was made obsolete by a new document where the following appeared: That document made 80 the official port for HTTP (www). However there is nothing about port 443 in that document. This is a list of TCP and UDP port numbers used by protocols of the Internet protocol suite for operation of network applications. The Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP) needed only one port for full-duplex, bidirectional traffic.

How to telnet to port 443 to test HTTPS sites | ma

Mar 29, 2020 Linux Iptables: HowTo Block or Open HTTP/Web Service Port

Is there any standard alternative HTTPS port? - Stack Overflow

How to Open Port 80 & 443 in FirewallD – TecAdmin Mar 23, 2020