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Knowledge Base

Is it possible to enable OCSP Stapling for a domain in Plesk?

 
apachedomainsextensionshostinghosting settings

Question

Is it possible to enable OCSP Stapling for a domain in Plesk?

Answer

For Plesk Onyx 17.8 and Obsidian for Linux

Note: This feature requires nginx to be installed and enabled: How to install and enable nginx reverse proxy on a Plesk for Linux server

Note: The certificate installed on the domain must contain both root certificate and all the intermediate certificates.

  1. Log into Plesk.

  2. Install SSL It! extension in Extensions menu.

  3. Navigate to Domains > example.com > Hosting Settings and make sure SSL/TLS support is enabled.

  4. Navigate to Domains > example.com > SSL/TLS Certificates.

  5. Click on the OCSP Stapling button:

    image3807.png


For Plesk Onyx 17.5 and below

Note: The certificate installed on the domain must contain both root certificate and all the intermediate certificates.

In case nginx is used:

  1. Log into Plesk.

  2. Navigate to Plesk > Domains > example.com > Apache & nginx Settings and add the following configuration to the Additional nginx directives field:

    ssl_stapling on;
    ssl_stapling_verify on;
    resolver 8.8.4.4 8.8.8.8 valid=300s;
    resolver_timeout 10s;

In case nginx is not installed, or not running:

  1. Connect to the server via SSH.

  2. Add following string to /etc/httpd/conf.d/ssl.conf file:

    SSLStaplingCache shmcb:/tmp/stapling_cache(128000)

  3. Log into Plesk.

  4. Navigate to Plesk > Domains > example.com > Apache & Nginx Settings and add the following configuration to Additional directives for HTTPS field:

    SSLUseStapling on

In order to test whether OCSP stapling works properly on the domain, use the following command:

# echo QUIT | openssl s_client -connect example.com:443 -servername example.com -status 2>/dev/null | grep -A 17 'OCSP'

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