Tag Archives: Certificate

View Certificates Issued to Hostname in ADCS

Active Directory Certificate Services (ADCS) is a useful service to provide in a Windows Domain environment. If you’re managing ADCS, you might want a quick way to list issued certificates to a specific hostname. Here’s a quick PowerShell script that … Continue reading

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View Server Certificate with PowerShell

This is a follow-up to my previous post on checking Server Certificate detail with OpenSSL. Note that this example lacks error checking – that is left as an exercise for the reader. This is based on the “Parallel Universe” blog … Continue reading

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Verify Server Certificate with OpenSSL

Here’s a quick note for checking the contents of a TLS (SSL) server certificate with the OpenSSL command-line tools. Comments: echo “Q” causes the openssl s_client to disconnect (quit) immediately after verifying connectivity. Replace your hostname and port for “your.fqdn.com:443”. … Continue reading

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Secure LDAP with Active Directory

Microsoft Active Directory Domain Controllers (DCs) support secure LDAP connections on TCP ports 636 (non-global queries) and 3269 (global-catalog queries). If you have an active Enterprise Root Certificate Authority in your domain, it will sign the domain controller LDAP certificate … Continue reading

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