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Red Hat Enterprise Linux 9 (RHEL 9) comes with OpenSSL 3.0 pre-installed.
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The certificates are located in the “/etc/pki/tls” directory. You can use the following command to locate them:
$ openssl version -d
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The SSL certificate is installed on your externally facing web (in our case IIS) server and authenticates with Office 365. To find the IIS certificate: Navigate to Windows Start > Windows Administrative Tools > Internet Information Services (IIS) Manager. Click on the server name in the Connections left-side panel. Double-click on Server Certificates to display certificates in the IIS Manager. Select the certificate you need.
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Office 365 uses the TLS (Transport Layer Security) protocol to encrypt communications between clients and servers. SSL (Secure Sockets Layer) is deprecated and no longer in use.
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Office 365 requires a third-party SSL certificate to encrypt communications between your clients and the Office 365 environment. You must install the SSL certificate on your server.
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Use the Get-ExchangeCertificate cmdlet to display Exchange certificates that are installed on Exchange servers.
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SSL stands for Secure Sockets Layer, a now-deprecated cryptographic protocol that has been replaced by TLS (Transport Layer Security). SSL/TLS certificates encrypt communications between the Exchange server and the users’ browsers. A secure connection prevents hackers from intercepting sensitive data.
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To update/renew your SSL certificate in Exchange, you need to order a brand new cert from your certificate authority and then install it on the Exchange server the same you did with the previous certificate.
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By default, the Apache .config file resides in /etc/apache2/sites-enabled/your_site_name. If you don’t find it there, run the following command:
sudo a2ensite your_site_name
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The path for SSL certificates is the /etc/ssl/certs/ directory on your server. Your private key files go to /etc/ssl/private. These are default locations, but you can change them depending on your configuration.
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