OpenSearch/docs/reference/settings/ssl-settings.asciidoc

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==== {component} TLS/SSL settings
You can configure the following TLS/SSL settings.
ifdef::server[]
+{ssl-prefix}.ssl.enabled+::
Used to enable or disable TLS/SSL. The default is `false`.
endif::server[]
+{ssl-prefix}.ssl.supported_protocols+::
include::{es-repo-dir}/settings/common-defs.asciidoc[tag=ssl-supported-protocols]
ifdef::server[]
+{ssl-prefix}.ssl.client_authentication+::
Controls the server's behavior in regard to requesting a certificate
from client connections. Valid values are `required`, `optional`, and `none`.
`required` forces a client to present a certificate, while `optional`
requests a client certificate but the client is not required to present one.
ifndef::client-auth-default[]
Defaults to `none`.
endif::client-auth-default[]
ifdef::client-auth-default[]
Defaults to +{client-auth-default}+.
endif::client-auth-default[]
endif::server[]
ifdef::verifies[]
+{ssl-prefix}.ssl.verification_mode+::
Controls the verification of certificates.
include::{es-repo-dir}/settings/common-defs.asciidoc[tag=ssl-verification-mode-values]
endif::verifies[]
+{ssl-prefix}.ssl.cipher_suites+::
include::{es-repo-dir}/settings/common-defs.asciidoc[tag=ssl-cipher-suites-values]
[#{ssl-context}-tls-ssl-key-trusted-certificate-settings]
===== {component} TLS/SSL key and trusted certificate settings
The following settings are used to specify a private key, certificate, and the
trusted certificates that should be used when communicating over an SSL/TLS connection.
ifdef::server[]
A private key and certificate must be configured.
endif::server[]
ifndef::server[]
A private key and certificate are optional and would be used if the server requires client authentication for PKI
authentication.
endif::server[]
===== PEM encoded files
When using PEM encoded files, use the following settings:
+{ssl-prefix}.ssl.key+::
include::{es-repo-dir}/settings/common-defs.asciidoc[tag=ssl-key-pem]
+{ssl-prefix}.ssl.key_passphrase+::
include::{es-repo-dir}/settings/common-defs.asciidoc[tag=ssl-key-passphrase]
+{ssl-prefix}.ssl.secure_key_passphrase+ (<<secure-settings,Secure>>)::
include::{es-repo-dir}/settings/common-defs.asciidoc[tag=ssl-secure-key-passphrase]
+{ssl-prefix}.ssl.certificate+::
include::{es-repo-dir}/settings/common-defs.asciidoc[tag=ssl-certificate]
+{ssl-prefix}.ssl.certificate_authorities+::
include::{es-repo-dir}/settings/common-defs.asciidoc[tag=ssl-certificate-authorities]
===== Java keystore files
When using Java keystore files (JKS), which contain the private key, certificate
and certificates that should be trusted, use the following settings:
+{ssl-prefix}.ssl.keystore.path+::
include::{es-repo-dir}/settings/common-defs.asciidoc[tag=ssl-keystore-path]
+{ssl-prefix}.ssl.keystore.password+::
include::{es-repo-dir}/settings/common-defs.asciidoc[tag=ssl-keystore-password]
+{ssl-prefix}.ssl.keystore.secure_password+ (<<secure-settings,Secure>>)::
include::{es-repo-dir}/settings/common-defs.asciidoc[tag=ssl-keystore-secure-password]
+{ssl-prefix}.ssl.keystore.key_password+::
include::{es-repo-dir}/settings/common-defs.asciidoc[tag=ssl-keystore-key-password]
+{ssl-prefix}.ssl.keystore.secure_key_password+ (<<secure-settings,Secure>>)::
include::{es-repo-dir}/settings/common-defs.asciidoc[tag=ssl-keystore-secure-key-password]
+{ssl-prefix}.ssl.truststore.path+::
include::{es-repo-dir}/settings/common-defs.asciidoc[tag=ssl-truststore-path]
+{ssl-prefix}.ssl.truststore.password+::
include::{es-repo-dir}/settings/common-defs.asciidoc[tag=ssl-truststore-password]
+{ssl-prefix}.ssl.truststore.secure_password+ (<<secure-settings,Secure>>)::
include::{es-repo-dir}/settings/common-defs.asciidoc[tag=ssl-truststore-secure-password]
[#{ssl-context}-pkcs12-files]
===== PKCS#12 files
{es} can be configured to use PKCS#12 container files (`.p12` or `.pfx` files)
that contain the private key, certificate and certificates that should be trusted.
PKCS#12 files are configured in the same way as Java keystore files:
+{ssl-prefix}.ssl.keystore.path+::
include::{es-repo-dir}/settings/common-defs.asciidoc[tag=ssl-keystore-path]
+{ssl-prefix}.ssl.keystore.type+::
include::{es-repo-dir}/settings/common-defs.asciidoc[tag=ssl-keystore-type-pkcs12]
+{ssl-prefix}.ssl.keystore.password+::
include::{es-repo-dir}/settings/common-defs.asciidoc[tag=ssl-keystore-password]
+{ssl-prefix}.ssl.keystore.secure_password+ (<<secure-settings,Secure>>)::
include::{es-repo-dir}/settings/common-defs.asciidoc[tag=ssl-keystore-secure-password]
+{ssl-prefix}.ssl.keystore.key_password+::
include::{es-repo-dir}/settings/common-defs.asciidoc[tag=ssl-keystore-key-password]
+{ssl-prefix}.ssl.keystore.secure_key_password+ (<<secure-settings,Secure>>)::
include::{es-repo-dir}/settings/common-defs.asciidoc[tag=ssl-keystore-secure-key-password]
+{ssl-prefix}.ssl.truststore.path+::
include::{es-repo-dir}/settings/common-defs.asciidoc[tag=ssl-truststore-path]
+{ssl-prefix}.ssl.truststore.type+::
Set this to `PKCS12` to indicate that the truststore is a PKCS#12 file.
//TBD:Should this use the ssl-truststore-type-pkcs11 or ssl-truststore-type definition and default values?
+{ssl-prefix}.ssl.truststore.password+::
include::{es-repo-dir}/settings/common-defs.asciidoc[tag=ssl-truststore-password]
+{ssl-prefix}.ssl.truststore.secure_password+ (<<secure-settings,Secure>>)::
include::{es-repo-dir}/settings/common-defs.asciidoc[tag=ssl-truststore-secure-password]
[#{ssl-context}-pkcs11-tokens]
===== PKCS#11 tokens
{es} can be configured to use a PKCS#11 token that contains the private key,
certificate and certificates that should be trusted.
PKCS#11 token require additional configuration on the JVM level and can be enabled
via the following settings:
+{ssl-prefix}.keystore.type+::
Set this to `PKCS11` to indicate that the PKCS#11 token should be used as a keystore.
//TBD: Is the default value `jks`?
+{ssl-prefix}.truststore.type+::
include::{es-repo-dir}/settings/common-defs.asciidoc[tag=ssl-truststore-type-pkcs11]
[NOTE]
When configuring the PKCS#11 token that your JVM is configured to use as
a keystore or a truststore for Elasticsearch, the PIN for the token can be
configured by setting the appropriate value to `ssl.truststore.password`
or `ssl.truststore.secure_password` in the context that you are configuring.
Since there can only be one PKCS#11 token configured, only one keystore and
truststore will be usable for configuration in {es}. This in turn means
that only one certificate can be used for TLS both in the transport and the
http layer.