"because the default port 443 may be blocked by other software" is where you should reveal more information. At the same port 443 you can host many sites/applications, especially on IIS 8 and above with SNI enabled, so there is rarely a need to host your site on a non-standard port…

Nov 02, 2017 Why is the 'System' process listening on port 443? Using netstat -ao | find ":443", I found out that port 443 is being used by PID 4, which was the System process. This happened to me twice on Windows Server 2012, and it was due to one of the following reasons: IIS was running, listed as "World Wide Web Publishing Service" in Services, which I stopped. Port 443 - ESET Internet Security & ESET Smart Security Oct 10, 2017 Solved: HTTPS Port 443 - Cisco Community

If you cannot connect, please work with your network security team to grant you access to port 443.

NGINX won't listen on port 443. Ask Question Asked 3 years, 7 months ago. Active 3 years, 6 months ago. Viewed 5k times 0. 0. I installed SSL on my DigitalOcean droplet following this documentation. Inspite of this, all requests on https:// are getting refused! I ran the

8/11/2019 · Port 443 is the standard port for all secured HTTP traffic, meaning it’s absolutely essential for most modern web activity. Encryption is necessary to protect information, as it makes its way between your computer and a web server.

TCP 443 - Port Protocol Information and Warning! TCP Port 443 may use a defined protocol to communicate depending on the application. A protocol is a set of formalized rules that explains how data is communicated over a network. Think of it as the language spoken between computers to help them communicate more efficiently. What is port 443? - Open Port May 19, 2020