Identity Gateway 7.2

ClientTlsOptions

Configures connections to the TLS-protected endpoint of servers, when IG is client-side.

When IG is client-side, IG sends requests to a proxied application, or requests services from a third-party application. IG is acting as a client of the application, and the application is acting as a server.

Use ClientTlsOptions in ClientHandler, ReverseProxyHandler, and AmService.

Usage

{
  "name": string,
  "type": "ClientTlsOptions",
  "config": {
    "keyManager": [ KeyManager reference, ...],
    "trustManager": [ TrustManager reference, ...],
    "sslCipherSuites": [ configuration expression<string>, ...],
    "sslContextAlgorithm": configuration expression<string>,
    "sslEnabledProtocols": [ configuration expression<string>, ...],
    "alpn": object,
    "hostnameVerifier": configuration expression<enumeration>
  }
}

Properties

"keyManager": array of KeyManager references references, optional

One or more KeyManager objects to serve the same secret key and certificate pair for TLS connections to all server names in the deployment. Key managers are used to prove the identity of the local peer during TLS handshake, as follows:

  • When ServerTlsOptions is used in an HTTPS connector configuration (server-side), the KeyManagers to which ServerTlsOptions refers are used to prove this IG’s identity to the remote peer (client-side). This is the usual TLS configuration setting (without mTLS).

  • When ClientTlsOptions is used in a ClientHandler or ReverseProxyHandler configuration (client-side), the KeyManagers to which ClientTlsOptions refers are used to prove this IG’s identity to the remote peer (server-side). This configuration is used in mTLS scenarios.

    Provide the name of one or more of the following objects defined in the heap, or configure one or more of the following objects inline:

Default: None

"sslCipherSuites": array of configuration expression<strings>, optional

Array of cipher suite names, used to restrict the cipher suites allowed when negotiating transport layer security for an HTTPS connection.

For information about the available cipher suite names, see the documentation for the Java Virtual Machine (JVM). For Oracle Java, see the list of JSSE Cipher Suite Names.

Default: Allow any cipher suite supported by the JVM.

"sslContextAlgorithm": configuration expression<string>, optional

The SSLContext algorithm name, as listed in the table of SSLContext Algorithms for the Java Virtual Machine (JVM).

Default: TLS

"sslEnabledProtocols": array of configuration expression<strings>, optional

Array of protocol names, used to restrict the protocols allowed when negotiating transport layer security for an HTTPS connection.

For information about the available protocol names, see the documentation for the Java Virtual Machine (JVM). For Oracle Java, see the list of Additional JSSE Standard Names.

Follow these protocol recommendations:

  • Use TLS 1.3 when it is supported by available libraries, otherwise use TLS 1.2.

  • If TLS 1.1 or TLS 1.0 is required for backwards compatibility, use it only with express approval from enterprise security.

  • Do use deprecated versions SSL 3 or SSL 2.

Default: TLS 1.3, TLS 1.2

"trustManager": array of TrustManager references, optional

One or more of the following TrustManager objects to manage IG’s public key certificates:

Trust managers verify the identity of a peer by using certificates, as follows:

  • When ServerTlsOptions is used in an HTTPS connector configuration (server-side), the TrustManagers to which ServerTlsOptions refers are used to verify the remote peer’s identity (client-side). This configuration is used in mTLS scenarios.

  • When ClientTlsOptions is used in a ClientHandler or a ReverseProxyHandler configuration (client-side), the TrustManager to which ClientTlsOptions refers are used to verify the remote peer’s identity (server-side). This is the usual TLS configuration setting (without mTLS).

If trustManager is not configured, IG uses the default Java truststore to verify the remote peer’s identity. The default Java truststore depends on the Java environment. For example, $JAVA_HOME/lib/security/cacerts.

Default: None

"alpn": object, optional

Not supported in web container mode.

A flag to enable the Application-Layer Protocol Negotiation (ALPN) extension for TLS connections.

{
  "alpn": {
    "enabled": configuration expression<boolean>
  }
}
enabled: configuration expression<boolean>, optional

  • true: Enable ALPN. Required for HTTP/2 connections over TLS

  • false: Disable ALPN.

Default: true

"hostnameVerifier": configuration expression<enumeration>, optional

The method to handle hostname verification for outgoing SSL connections.

For backward compatibility, when a ClientHandler or ReverseProxyHandler includes the deprecated "hostnameVerifier": "ALLOW_ALL" configuration, it takes precedence over this property. A deprecation warning is written to the logs.

Use one of the following values:

  • ALLOW_ALL: Allow a certificate issued by a trusted CA for any hostname or domain to be accepted for a connection to any domain.

    If the SSL endpoint uses a raw IP address rather than a fully-qualified hostname, you must configure this property as ALLOW_ALL.

    To prevent the compromise of TLS connections, use ALLOW_ALL in development mode only. In production, use STRICT.

    The ALLOW_ALL setting allows a certificate issued for one company to be accepted as a valid certificate for another company.

  • STRICT: Match the hostname either as the value of the the first CN, or any of the subject-alt names.

    A wildcard can occur in the CN, and in any of the subject-alt names. Wildcards match one domain level, so *.example.com matches www.example.com but not some.host.example.com.

Default: STRICT

Example

{
  "tls": {
    "type": "ClientTlsOptions",
    "config": {
      "sslContextAlgorithm": "TLSv1.2",
      "keyManager": {
        "type": "KeyManager",
        "config": {
          "keystore": {
            "type": "KeyStore",
            "config": {
              "url": "file://${env['HOME']}/keystore.jks",
              "passwordSecretId": "keymanager.keystore.secret.id",
              "secretsProvider": "SystemAndEnvSecretStore"
            }
          },
          "passwordSecretId": "keymanager.secret.id",
          "secretsProvider": "SystemAndEnvSecretStore"
        }
      },
      "trustManager": {
        "type": "TrustManager",
        "config": {
          "keystore": {
            "type": "KeyStore",
            "config": {
              "url": "file://${env['HOME']}/truststore.jks",
              "passwordSecretId": "trustmanager.keystore.secret.id",
              "secretsProvider": "SystemAndEnvSecretStore"
            }
          }
        }
      }
    }
  }
}