Technical SysOps blog, where topics include Sysadmin, DevOps, computers, servers, web, MySQL, database, virtualization, optimization and security
Technical SysOps blog, where topics include Sysadmin, DevOps, computers, servers, web, MySQL, database, virtualization, optimization and security
Basic OpenSSL commands you can use in your day to day job when it involves working with SSL/TLS certificates. For example you use OpenSSL to get a certificate's SerialNumber or to verify the SAN (Subject Alternative Names).
Learn how to use the Twilio SendGrid Web API v3 to send mail with PowerShell
Windows Server IIS is known for reusing DH key values, but there is a way to disable ECDH public server param reuse in Windows Server IIS and here is how.
Use a specific TLS certifictate or thumbprint for outgoing HTTPS connections because of endpoint restrictions using PowerShell.
The following PowerShell snippet can be used to quickly install an SSL (or TLS) certificate in Windows Server. It assumes you have a PFX file and its password. The default location is Cert:\LocalMachine\My, to use for IIS websites.
Native support for HTTP/3 in Windows Server 2022, jeej! Host HTTP/3 web services in Windows
Set up HTTP Strict-Transport-Security (HSTS) response header in Windows Server IIS 10, here is some more technical information about HSTS in IIS, and other security headers...
Send outgoing mail over authenticated SMTP using TLS, in PHP, ASP and ASP.NET. Send email securely from your website. Ready to use examples!
Learn how to override wp-mail() and send secure email using authenticated SMTP and StartTLS from WordPress.
Learn how to fix your PHP config instead of turning off CURLOPT_SSL_VERIFYPEER in php.ini and overcome certificate validation errors with cURL and PHP.
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