Apache Disabling SSL v3 Instructions (2024)

Depending on how your Apache servers are configured, you may need to disable SSL v3.

Note that older versions of Internet Explorer may not have the TLS protocol enabled by default. If you disable SSL versions 2.0 and 3.0, the older versions of Internet Explorer will need to enable the TLS protocol before they can connect to your site.

Apache: How to Disable the SSL v3 Protocol

  1. Locate your SSL Protocol Configuration on your Apache server.

    For example,

    1. Type one the following commands:

      In these examples, /etc/apache2 and /etc/httpd are the base directory for an Apache installation.

      For a list of default base directories and installation layouts in Apache HTTPD for different operating systems, see DistrosDefaultLayout.

      Note:

      If that command doesn’t find the “SSLProtocol” string, then look for SSLEngine by typing one of the following commands:

      grep -i -r "SSLEngine" /etc/apache2
      or
      grep -i -r "SSLEngine" /etc/httpd

    2. The command will output the available Virtual Hosts or your config file.

    3. Open the config file or Virtual Host for which you are disabling the SSL v3 protocol.

  2. Add or update the following lines in your configuration:

    SSLProtocol all -SSLv2 -SSLv3

    Note:

    If you used the grep -i -r "SSLEngine"… command, you need to search for “SSLEngine On” and add SSLProtocol all -SSLv2 -SSLv3 in the line beneath it.

  3. Restart Apache.

    For example, type the following command:

    apachectl -k restart

  4. You have successfully disabled the SSL v3 protocol.

Apache Disabling SSL v3 Instructions (2024)

FAQs

How to disable SSLv3 in Apache? ›

Apache: Disabling the SSL v3 Protocol
  1. Locate your SSL Protocol Configuration on your Apache server. For example, ...
  2. Add or update the following lines in your configuration: SSLProtocol all -SSLv2 -SSLv3. ...
  3. Restart Apache. For example, type the following command: ...
  4. You have successfully disabled the SSL v3 protocol.

How do I disable the SSL v3 protocol? ›

How to disable SSL V3 in Internet Explorer
  1. Open Internet Explorer, click the Gear, the select Internet Options.
  2. Select the Advanced Tab, scroll down to the Security section.
  3. In the Security section, locate the Use SSL and Use TLS options, uncheck SSL 2.0, 3.0 and TLS 1.1.
  4. Click apply, then OK.

How to disable SSL v3 in SQL Server? ›

Deactivating SSLv3 on IIS
  1. Open registry editor: ...
  2. Navigate to: ...
  3. By default, there should be only one key presented “SSL 2.0”. ...
  4. Right-click on SSL 3.0 >> New >> Key. ...
  5. Right-click on Server >> New >> DWORD (32-bit) Value. ...
  6. Double-click the Enabled value and make sure that there is zero (0) in the Value Data field >> click OK.

How do you check SSLv3 is disabled or not? ›

How to check if SSLv3 is disabled:
  1. Install Openssl on windows machine (http://gnuwin32.sourceforge.net/packages/openssl.htm)
  2. In command prompt run the below commands. openssl s_client -connect <machine_name>:<ssl_port> -ssl3.
  3. You will see some error something like below. ...
  4. If SSLv3 is enabled, and you run the same command.
Oct 3, 2023

How to disable options in Apache server? ›

Steps
  1. Edit the httpd.conf file for the HTTP server. This is typically in directory /www/<instanceName>/conf/httpd.conf.
  2. Add these three lines in the httpd. conf file. RewriteEngine On. RewriteCond %{REQUEST_METHOD} ^OPTIONS. RewriteRule .* - [F] ...
  3. Restart the HTTP server to take effect.
Dec 18, 2019

How to disable outdated versions of SSL TLS in Apache? ›

To disable outdated versions of SSL/TLS in Apache:
  1. On your server, edit ssl. ...
  2. Find the line that begins with the following in the file: SSLProtocol all -SSLv2.
  3. Comment out the line by adding a # before the line.

How do I disable SSL v3 in Chrome? ›

Right click on the Google Chrome / Chromium shortcut on the Desktop, and click Properties. In Target, after the last character (a quote), add a space and then --ssl-version-min=tls1 . Click OK, and confirm if it asks for administrator privileges.

How do I disable SSL settings? ›

​​ Disable Universal SSL certificate

Select your domain. Go to SSL/TLS > Edge Certificates. For Disable Universal SSL, select Disable Universal SSL.

Is SSLv3 deprecated? ›

Due to a vulnerability in the SSLv3 (Secure Socket Layer) protocol, support for this protocol is deprecated in z/OS® Explorer. However, SSL was the default protocol up until the deprecation, which implies that existing host and client setups require updates to switch to TLS (Transport Layer Security).

How to disable SSL in Apache? ›

Apache - Disable SSL 2.0 and SSL 3.0
  1. Step 1: Find all SSL sites on Apache. ...
  2. Step 2: Modify the virtual hosts. ...
  3. Step 3: Restart Apache.
Sep 28, 2023

How do I disable SSL certificate in SQL Server? ›

From SQL Server Configuration Manager, under SQL Server Network Configuration, right-click Protocols for <server instance>, and then select Properties. I remove the certificate and on Flags tab, in the ForceEncryption box, I select NO, and then OK to close the dialog box.

How to disable SSL MySQL command? ›

Log in to the MySQL database in SSL mode.
  1. Run the following command to exit from the MySQL database: exit.
  2. Log in to the MySQL database as user root. Add the following parameters at the end of the login command: --ssl-mode=DISABLED. ...
  3. Run the following command to check the connection mode of the MySQL database: \s.
Dec 27, 2023

What is the problem with SSLv3? ›

Once an attacker can downgrade the connection to SSLv3, the attacker can take advantage of a flaw in the SSLv3 standard that allows a man-in-the-middle attack and decrypt content being transferred over an SSLv3 connection.

How do I enable SSLv3? ›

To enable the SSL 3.0 protocol, follow these steps:
  1. Open server. xml at %ENDECA_TOOLS_ROOT%\server\workspace\conf .
  2. Change sslEnabledProtocols to sslEnabledProtocols="SSLv3. 0" in the SSL connector. ...
  3. Open java. ...
  4. Uncomment the jdk. ...
  5. Restart the Tools and Frameworks server.

How do I fix SSLv3 handshake failure? ›

How to Fix the SSL Handshake Failed Error (5 Methods)
  1. Update Your System Date and Time.
  2. Check to See If Your SSL Certificate Is Valid.
  3. Configure Your Browser for the Latest SSL/TLS Protocol Support.
  4. Verify That Your Server Is Properly Configured to Support SNI.
  5. Make Sure the Cipher Suites Match.
Dec 19, 2022

How to disable TLS ciphers in Apache? ›

In Apache httpd ciphers are set in SSLCipherSuite directive. Ciphers are delimited by space or by semicolon (what ever you choose). To disable ciphers you need to add "exclamation mark" in front of cipher.

How to disable a module in Apache? ›

Deactivating a module is as easy as activating it. In this case, we will use the a2dismod command followed by the name of the module that we wish to deactivate.

How to disable SSL 2.0 and 3.0 in Tomcat? ›

Resolution
  1. Locate server.xml in Tomcat being used by SDM and take a backup of the file. ...
  2. Locate the section to configure SSL searching for <Connector port="8443" protocol="HTTP/1.1"
  3. Set the following in the connector: ...
  4. Save Changes.
  5. Restart Services.
Nov 14, 2023

How to disable status module in Apache? ›

Open the Apache configuration file containing the LoadModule directive of the module that you want to enable or disable using your preferred text editor. Comment out the LoadModule directive associated with the module to disable a module. Uncomment a commented LoadModule directive to re-enable a module.

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