![]() ![]() This must be the computer name (the local Windows computer name, not DNS name) of the SQL Server computer. However, pay attention to the common name (CN) of the certificate. Most of them are optional and you can enter whatever suits you. You will be prompted for several attributes of the certificate. This creates a certificate for the purpose of Server Authentication and is required for SQL Server certificate. Then extension “server_ssl” references the lines added to the config file. Openssl req -x509 -newkey rsa:4096 -keyout C:\outputdir\yourkey.pem -out C:\outputdir\yourcert.pem -days 365 -extensions server_ssl Open the OpenSSL Config file (openssl.cfg) in the \bin subfolder of your OpenSSL program folder. So, step one: Download the OpenSSL Windows binaries and install them on your computer. Now, I think, it makes sense to start with OpenSSL right away. I tried a lot! In the end I frequently have to resort to OpenSSL to convert, export, or otherwise overcome some limitations of originally intended/used tool or method. There are several tools and methods to create a self-signed certificate. Of course, if you purchased a real CA-issued certificate, you can also follow along the steps of this text, just omit the next paragraph and all instructions to circumvent problems with the untrusted CA. You should not use self-signed certificates to secure your production SQL Server. Either distributing and installing your self-signed certificate, or the issuing CA certificates to multiple computers or disabling client-side certificate verification may increase the risk of compromise of data while at the same time creating a false sense of security. ![]() However, it does not provide security regarding the identity of the server side of your connection. ![]() A self-signed certificate technically provides the same cryptographic encryption strength as an expensive certificate issued by a reputable Certification Authority. what an SSL/TLS is, what a certificate is and what a Certification Authority (CA) is.) before following this guide. You should generally know what you are doing (e.g. Please also note, as discussed in the GDPR Whitepaper for Software Developers I co-authored, development servers should not contain a copy of production data regarding personal information and/or other sensitive data. Please note, I’ve neither the time nor the expertise to write a full-fledged tutorial on securing SQL Server connections. If I can help you to with that matter, all the better. So, I decided to write down the relevant steps, primarily for my own future reference. Once again, I just wasted several hours to figure out how to create and install a self-signed SSL/TLS certificate to encrypt the connection to a Microsoft SQL Server instance for development purposes. Photo by Mauro Sbicego, used here under CC0 licensing How to Create and Install a Self-Signed SSL/TLS Certificate for SQL Serverīy Philipp Stiefel, originally published May 18 2020, last updated May 18 2020 ![]()
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