Can port 443 work without SSL?

If you connect to it will make a HTTPS request to port 443. If you are try connecting to a port not running SSL/TLS with the HTTPS protocol you’ll get a SSL connection error.

How do I know if Apache SSL is enabled?


  1. Connect to a Plesk server via SSH.
  2. Run the command: on CentOS/RHEL-based distributions. # grep SSLProtocol /etc/httpd/conf.d/ssl.conf. SSLProtocol +TLSv1.2. on Debian/Ubuntu-based distributions. # grep -ir SSLProtocol /etc/apache2/* /etc/apache2/mods-available/ssl.conf:SSLProtocol +TLSv1.2 +TLSv1.3.

How do I fix a port 443 error?

What are the steps to troubleshoot a Port 443 error?

  1. Check to see whether Port 443 is opened. Check (telnet 443) from the agent host to make sure the port has been opened.
  2. Check the proxy.
  3. SSL for the Java Agent.
  4. JKK and SSL supported protocol or cipher limitations.

How do I change the port on Apache 443?

To change the port number, follow the steps below:

  1. Edit the /opt/bitnami/apache2/conf/bitnami/bitnami.conf file and modify the value specified in the Port directive. For example: Listen 8443
  2. Restart the Apache server for changes to take effect. sudo /opt/bitnami/ restart apache.

Is SSL enabled Apache?

If you cannot locate the configuration file, see the Apache documentation for your operating system. Note: On CentOS 7, the file is called ssl. conf rather than httpd-ssl. conf….Procedure.

Version Path
RedHat, CentOS, Fedora /etc/httpd/conf/httpd.conf
Ubuntu, Debian /etc/apache2/apache2.conf
SLES /etc/apache2/httpd.conf

How do I know if SSL is open?

How to Find the OpenSSL Version Number

  1. Click the Windows “Start” button and type “cmd” into the search text box. Press “Enter” to open your Windows command line.
  2. Type “openssl /?” to view a list of options for the command line utility. This also shows you the proper syntax for the command.
  3. references.

What happens when port 443 blocked?

If your browser returns “Unable to access network”, it is likely that your computer, router or network is blocking port TCP/443. Your https traffic can be blocked in various places (running software) or by various devices such as your router.

Can I change SSL port?

Short answer: yes, you can! Long answer comes here: Can I use another port other than 443 for SSL communication? SSL is in no way tied to a single port value; in fact, as a protocol, it can be used over any transport medium, as long as that medium provides a bidirectional stream for arbitrary bytes.

Does HTTPS have to be on port 443?

By default, HTTPS connections use TCP port 443. HTTP, the unsecure protocol, uses port 80.

When do I need to use port 443 for Apache?

Relevance of Apache port 443 By default, Apache uses port 80 for normal web traffic. But, when it has to deal with secure web transactions, it uses the port 443. This secure transaction works using the SSL certificate.

How to enable Apache HTTP server to use SSL?

This document shows how to enable an Apache HTTP server to use SSL on port 443 and non-SSL on port 80.

Why is port 443 not open in firewall?

When having problems with port 443 connection, isolating firewall problems can be tricky. Here, we first check if the port is accessible within the server. For this, we use the command : And, if the connection fails, most probably, the port 443 will not be open in the server firewall.

How do I add SSL port to virtual host?

In the left pane, go to Server Properties > Virtual Hosts. Step 8: Click on the Add button in the right pane under Virtual host containers. In the drop-down box under IP address or Hostname, click All IP addresses; this creates an asterisk (*) in the left box. For the Port, type 443 for the SSL port.