How to use OpenSSL to manage PKCS #12 archive

Use OpenSSL to manage PKCS #12 archive.

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SysOps

How to match certificate and its intermediate counterpart

Match certificate and its intermediate counterpart by using X.509 key identifier extension.

Categories
SysOps

How to display and verify certificate chain for specific domain

Use openssl utility to display and verify the certificate chain for a specific domain.

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Uncategorized

How to match certificate and its private key

Match certificate and its private key by comparing the modulus of the certificate to the modulus of the private key.

Categories
SysOps

How to display TLS server extensions

Use openssl command-line utility to display TLS server extensions.

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Uncategorized

How to determine if web-server still supports deprecated TLS 1.0 protocol

Use essential openssl utility to quickly determine if your web-server still supports deprecated TLS 1.0 protocol.

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Uncategorized

How to monitor SSL certificates using icinga2

Create custom data field to define multiple domain names and service apply rule to verify those SSL certificates.

Categories
SysOps

How to locally check SSL certificate

Check locally stored SSL certificate using essential utilities like openssl and curl. This knowledge is especially useful when you want to prepare an SSL certificate for a load balancer.