https://rdr-it.com/en/tag/certificate/System administration, virtualization, security and tools for IT professionals.en-USTue, 13 Oct 2026 10:43:53 +0000https://rdr-it.com/en/generate-a-pfx-certificate-from-a-key-and-a-crt-file/Wed, 09 Sep 2026 04:30:00 +0000https://rdr-it.com/en/generate-a-pfx-certificate-from-a-key-and-a-crt-file/In this tutorial, I’ll explain how to convert a certificate to PFX format from .key and .crt files. To convert a certificate to PFX format, you’ll need OpenSSL. In this …https://rdr-it.com/en/generate-a-lets-encrypt-wildcard-certificate-with-certbot-and-cloudflare-dns-01/Wed, 19 Aug 2026 04:30:00 +0000https://rdr-it.com/en/generate-a-lets-encrypt-wildcard-certificate-with-certbot-and-cloudflare-dns-01/Step-by-step tutorial for generating a Let’s Encrypt wildcard certificate with Certbot using the DNS-01 challenge for a domain hosted on Cloudflare.https://rdr-it.com/en/adfs-how-to-replace-the-ssl-certificate/Wed, 17 Jun 2026 04:30:00 +0000https://rdr-it.com/en/adfs-how-to-replace-the-ssl-certificate/In this tutorial, I’ll explain how to replace the SSL certificate on ADFS (Active DirectoryFederation Services). This step is necessary when renewing an expired …https://rdr-it.com/en/windows-server-2025-install-the-ad-cs-role-enterprise-certification-authority/Wed, 20 May 2026 04:30:00 +0000https://rdr-it.com/en/windows-server-2025-install-the-ad-cs-role-enterprise-certification-authority/In this tutorial, I will explain how to install the AD CS (Active DirectoryCertificate Services) role, which allows you to set up a certificate authority that will enable …https://rdr-it.com/en/sign-rdp-files-and-secure-rds-farms-after-the-april-2026-windows-updates/Tue, 05 May 2026 07:45:11 +0000https://rdr-it.com/en/sign-rdp-files-and-secure-rds-farms-after-the-april-2026-windows-updates/Since April 2026, Windows has required the signature of RDP files and an enhanced configuration of RDS farms. Find out how to correct errors, sign your RDP files and …https://rdr-it.com/en/active-directory-configuring-the-ldaps-protocol/Wed, 08 Apr 2026 04:30:00 +0000https://rdr-it.com/en/active-directory-configuring-the-ldaps-protocol/In this tutorial, I will explain how to configure the LDAPS protocol in an environment Active Directory with secure connections to domain controllers using an SSL …https://rdr-it.com/en/add-and-assign-an-ssl-certificate-on-exchange-2016-and-2019/Wed, 06 Aug 2025 04:30:00 +0000https://rdr-it.com/en/add-and-assign-an-ssl-certificate-on-exchange-2016-and-2019/Learn how to add and assign an SSL certificate on Exchange Server 2016 to secure communications between your users and the email serverhttps://rdr-it.com/en/create-a-sub-certificate-authority-with-ad-cs/Wed, 25 Dec 2024 05:30:00 +0000https://rdr-it.com/en/create-a-sub-certificate-authority-with-ad-cs/In this tutorial, I will explain how to create a sub CA with Windows AD CS. Sub-CAs are underused on firewalls when SSL decryption is implemented, generating a sub-CA …https://rdr-it.com/en/ubuntu-add-a-certificate-from-an-internal-certificate-authority-40287/Wed, 13 Sep 2023 04:30:00 +0000https://rdr-it.com/en/ubuntu-add-a-certificate-from-an-internal-certificate-authority-40287/In this tutorial, I will show you how to add the certificate of an internal CA on an Ubuntu machine. In business, we often use an Enterprise Certification Authority, …https://rdr-it.com/en/powershell-sign-scripts/Wed, 30 Aug 2023 04:30:00 +0000https://rdr-it.com/en/powershell-sign-scripts/In this tutorial, I will explain how to sign your scripts. Before going into the subject, we will see why signing the scripts, the main reason is security. If your …https://rdr-it.com/en/windows-server-disable-a-cipher-suite/Wed, 02 Nov 2022 05:30:00 +0000https://rdr-it.com/en/windows-server-disable-a-cipher-suite/In this tutorial, I will walk you through how to disable a cipher suite also call cipher. If you arrive on this tutorial by a search engine, there is a good chance that …https://rdr-it.com/en/nginx-generate-a-lets-encrypt-certificate/Wed, 18 May 2022 04:30:00 +0000https://rdr-it.com/en/nginx-generate-a-lets-encrypt-certificate/After seeing how to install and configure Nginx as a reverse proxy and harden security with Crowdsec , I will explain in this tutorial how to generate a Let’s Encrypt …https://rdr-it.com/en/pfx-certificate-extract-the-certificate-and-the-private-key/Wed, 11 May 2022 04:30:00 +0000https://rdr-it.com/en/pfx-certificate-extract-the-certificate-and-the-private-key/In this tutorial, I will explain how to extract the certificate and the private key from a certificate in PFX format with OpenSSL. The easiest way to use OpenSSL is to …https://rdr-it.com/en/exchange-install-and-configure-an-ssl-certificate/Fri, 09 Apr 2021 04:30:00 +0000https://rdr-it.com/en/exchange-install-and-configure-an-ssl-certificate/Overview In this tutorial, I will explain how to install a certificate on Exchange 2013/2016/2019 and how to assign it to the different services. There are two ways to do …https://rdr-it.com/en/certify-the-web-easily-generate-lets-encrypt-certificates-for-iis/Wed, 27 Jan 2021 05:30:00 +0000https://rdr-it.com/en/certify-the-web-easily-generate-lets-encrypt-certificates-for-iis/In this tutorial, I will tell you how to easily generate Let’s Encrypt certificates for IIS with Certify The Web software. I have already covered the topic of Let’s …https://rdr-it.com/en/active-directory-right-management-services-installation-and-configuration/Wed, 30 Oct 2019 06:08:42 +0000https://rdr-it.com/en/active-directory-right-management-services-installation-and-configuration/Introduction AD RMS (Active Directory Right Management) is a Windows Server service that provides extended rights management for certain files. The system is similar to …https://rdr-it.com/en/gpo-deploy-a-certificate/Tue, 09 Jul 2019 09:38:07 +0000https://rdr-it.com/en/gpo-deploy-a-certificate/This tutorial explains how to deploy a certificate using a Group Policy (GPO).https://rdr-it.com/en/rds-farm-configure-ssl-certificates/Thu, 28 Feb 2019 03:00:12 +0000https://rdr-it.com/en/rds-farm-configure-ssl-certificates/When deploying an RDS farm , it may be necessary to configure SSL certificates for the following services: RDS gateway. WEB access. Service Broker. If you use self-signed …https://rdr-it.com/en/setting-up-a-certification-authority-under-windows-2012r2-2016/Mon, 03 Dec 2018 00:01:47 +0000https://rdr-it.com/en/setting-up-a-certification-authority-under-windows-2012r2-2016/Presentation A Certificate Authority (CA) can issue certificates for internal internet sites, RDS connections … The advantage of having a CA is having to deploy a single …