The Certificate Extension Parameter component allows you
to configure a Certificate Extension that will be applied to the CSR
to be submitted for signing.
You can access this component from the signingService palette by expanding , and add
the desired Certificate Parameter component to a Signing Profile or
a Signed Cert Config component. As of Niagara 4.14, the extension parameter “Subject Alternative
Name” is added by default to the serverProfile.

| Property | Value | Description |
|---|
| Parameter Type | read-only | Specifies the type of certificate parameter. |
| Extension Oid | string | Specifies the object Id of the certificate extension. |
| value | additional properties | Lists information that is configuration-specific to the
selected type of extension. As of Niagara 4.14, the following added special format options
are available:
%niagaraStationAddressOrHostnameOrIpAddress%: This option first will attempt to locate a corresponding NiagaraStation
in the NiagaraNetwork of the local station, which is the SigningService
station, to find a match for the requester. If located, the Address property value of that NiagaraStation will be
used. If not located, it will next attempt to use the Host Name of
the requester. If the Host Name is not available, it will use the
IP Address of the requester.
%niagaraStationAddressOrHostname%: This
option will first attempt to locate a corresponding NiagaraStation
in the NiagaraNetwork of the local station, which is the SigningService
station, to find a match for the requester. If located, the Address property value of that NiagaraStation will be
used. If not found, it will use the Host Name of the requester.
%niagaraStationAddressOrIpAddress%: This
option will first attempt to locate a corresponding NiagaraStation
in the NiagaraNetwork of the local station, which is the SigningService
station, to find a match for the requester. If located, the Address property value of that NiagaraStation will be
used. If not found, it will use the IP Address of the requester.
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