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This article is valid for Nexus OCSP Responder 6.2 and later. |
This article and its sub-articles describe how to
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configure Nexus OCSP Responder. When running the Nexus OCSP Responder, the application will read files (for example, configuration and truststore) from <configuration root>.
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Prerequisites
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Prerequisites
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Step-by-step instruction
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Open the configuration file
Open the configuration file ocsp.conf for editing:
On Windows, the path to the <configuration root> is chosen during installation and is defined in the string registry key named
Argumentsin the following Windows registry path:HKEY_LOCAL_MACHINE\SOFTWARE\Nexus\Service Parameters\OCSPOn Linux, the path to the <configuration root> is defined in <install root>/bin/nexus-ocsp.conf by the following parameter:
SERVICEARGUMENTS='-p <configuration root>
You can manually change the path after the installation by redefining the path parameter to point to a new configuration root directory.
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Mandatory settings
In the configuration file, each main configurable entity has its own section. The corresponding parameter names are built up with prefixes associated with the entity.
Do the mandatory settings in the OCSP configuration file:
Configurable Entity | Description | Prefix |
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The trust store is a file containing certificates for all trusted CAs. |
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The certificate cache is a cache directory where "non-trusted" certificates are stored. |
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A certificate can be validated by checking for revocation data locally in a CRL or CIL cache. |
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OCSP responders are preconfigured with different semantics. First make your choice between the preconfigurations, then specify the details for each responder. |
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Keys are specified together with the configuration that uses them. The keys may be located in software tokens and in 3rd party devices. |
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The agent is responsible for the communication with an existing system monitor (when used) and for logging. |
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Optional settings
Do the other settings in the OCSP configuration file (optional).
Configurable Entity | Description | Prefix |
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Certificate lookup (optional) | If a required certificate cannot be found in the cache, it may be searched in specified directories. |
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Back end client (optional) | Certificates can be validated by use of external OCSP responders. The OCSP client that should send the requests, will use several methods to find the responder URLs. |
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OCSP response cache (optional) | The response cache is a cache where responses from external OCSP responders can be stored. |
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Configuration
See these articles for configuration of Nexus OCSP Responder:
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Descriptions and workflow
The articles that are gathered here: Nexus OCSP Responder descriptions and workflow include descriptions for various concepts used
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within Nexus OCSP Responder and also some useful workflows.
General information
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Specify file paths
Full path
You can specify a full path to a file or a directory, such as ocsp.trust.store=C:\Program Files\Nexus\OCSP Responder\certs\trust.store.
Relative path
Alternatively, specify a relative path (default): ocsp.trust.store=certs/trust.store ("/" makes the specification OS-independent)
On both Windows and Linux environments, the relative path will start from the <configuration root> directory.
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Case sensitivity
Entity | Case sensitive |
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Configuration parameter names | No |
File names | Yes (when appearing as values, that is, on the right hand side of an "=") |
LDAP searchbase and filters | Yes (when appearing as values, that is, on the right hand side of an "=") |
Distinguished name patterns used for certificate matching | Yes (when appearing as values, that is, on the right hand side of an "=") |
URLs | Yes (when appearing as values, that is, on the right hand side of an "=") |
Constants and types | No |
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Configuration settings to specify
A default setting exists for most configuration parameters, but cannot be provided for all of them. The configuration parameters below need to be specified:
Validation Section
You have to specify at least one validator and set the following parameter:...type
For each CRL/CIL validator we recommend that you also specify CRL/CIL provider(s) to keep the CRL/CIL cache constantly up-to-date.OCSP Responder Section
You have to specify at least one responder and set the following parameters:...type...url...workers...signer.x.issuerdn...signer.x.dn...signer.x.pin
Authentication, authorization and billing are disabled by default.Key Management Section
To be able to find keys, you must always specify at least one keystore:key.store.store=....
After updates
When you have done configuration updates, restart Nexus OCSP Responder.
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Encryption of sensitive configuration parameters
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To scramble any configuration parameter in the configuration file, add the keyword For example: *.pin = 1234 is considered to be sensitive and should therefore be scrambled.
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This article is valid for Nexus OCSP Responder 6.2 and later.
Related information
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