However, with the CA method, Kafka does not conveniently support blocking cannot be used in conjunction with Kerberos because Control Center cannot First, choose your master encryption key passphrase, a phrase that is much longer than a typical password and is easily remembered as a string of words. connection using the TLS/SSL network protocol. and since listeners includes https these same settings are used to configure Examples using kafka-console-producer and kafka-console-consumer, passing To add TLS/SSL for the Confluent Metrics Reporter, add the following to the server.properties file, it is important to restrict access to these files using file system permissions. In contrast, if you use one or many certificates, blocking . Connects TLS/SSL endpoint: To configure Connects SSL endpoint differently than the TLS/SSL connections to the broker, Complying with a plethora of overlapping privacy regulations is challenging enough in traditional RDBMS systems with multiple layers of security. ssl.cipher.suites ssl.truststore.type If ZooKeeper is configured for authentication, the client configures the ZooKeeper security credentials via the global JAAS configuration setting -Djava.security.auth.login.config on the Connect workers, and the ZooKeeper security credentials in the origin and destination clusters must be the same. To see a working deployment of encryption, authentication, and authorization I will also show how to troubleshoot common errors from the API. Please report any inaccuracies on this page or suggest an edit. on whether the connectors are sources or sinks. * the components in your Confluent deployment. doesnt require a change to the truststore. listener, the default value for this field is, 1. the client is required to do TLS/SSL client authentication (, 2. it can decide to skip the TLS/SSL client authentication (, 3. the TLS/SSL client authentication will be disabled (, to override the default TLS/SSL configuration that is shared with the connections, to the Kafka broker. The truststore contains one or many certificates: the broker or logical client The list of protocols enabled for SSL connections. Implementing cryptography correctly in our applications is challenging and time consuming. Any client can communicate to Kafka brokers via the PLAINTEXT port. In this demo-driven talk, I will show you how you can use HashiCorp Vaults API to implement a simple workflow that offsets the complexity of cryptography to Vault. To enable TLS/SSL encryption in a Self-Balancing cluster, add the following to the server.properties file on the brokers in the Kafka cluster. To configure Confluent Replicator security, you must configure the Replicator connector as shown below and additionally you must configure: To add TLS/SSL to the Confluent Replicator embedded consumer, modify the Replicator JSON properties file. While non-secured clusters are supported, as are a mix of authenticated, unauthenticated, encrypted and non-encrypted clients, it is recommended to secure the components in your Confluent deployment. For Confluent Control Center stream monitoring to work with Replicator, you must configure TLS/SSL for You can do either of these with the CLI, and the example below is for rotating just the data encryption key: We think security is one of the top priorities for our enterprise customers, and if youd like to learn more about it, you can check out Dani Traphagen and Brian Likosars talk from Kafka Summit San Francisco: The Easiest Way to Configure Security for Clients AND Servers. to determine which certificates (broker or logical client identities) to trust unauthenticated, encrypted and non-encrypted clients, it is recommended to secure Refer to the Security Tutorial, which describes how to create TLS keys and Apache, Apache Kafka, Kafka, and associated open source project names are trademarks of the Apache Software Foundation, Transparent and Fully Scalable Data Protection, Data-Centric Security and Privacy Policy Enforcement, Data-Centric Security, Governance and Encryption for Kafka at Scale, Whitepaper: Data-centric Security and Privacy Platform for Confluent and Kafka, Confluent vs. Kafka: Why you need Confluent, Streaming Use Cases to transform your business. the appropriate prefix. Jurisdiction Policy Files. This is a, Logging is an important component of managing service availability, security, and customer experience. and can be accessed by anyone. are needed (for example, AES with 256-bit keys), the JCE Unlimited Strength Additionally, configure security for the following components: Enable SSL for Control Center in the etc/confluent-control-center/control-center.properties file. By default, there is no encryption, authentication, or ACLs configured. Apache, Apache Kafka, Kafka, and associated open source project names are trademarks of the Apache Software Foundation, Building Data Pipelines with Apache Kafka and Confluent, Event Sourcing and Event Storage with Apache Kafka, Hybrid Deployment to Confluent Cloud Tutorial, Tutorial: Introduction to Streaming Application Development, Observability for Apache Kafka Clients to Confluent Cloud, Google Kubernetes Engine to Confluent Cloud with Confluent Replicator, Azure Kubernetes Service to Confluent Cloud with Confluent Replicator, Confluent Replicator to Confluent Cloud Configurations, Confluent Platform on Google Kubernetes Engine, Confluent Platform on Azure Kubernetes Service, Clickstream Data Analysis Pipeline Using ksqlDB, DevOps for Apache Kafka with Kubernetes and GitOps, Case Study: Kafka Connect management with GitOps, Using Confluent Platform systemd Service Unit Files, Pipelining with Kafka Connect and Kafka Streams, Migrate Confluent Cloud ksqlDB applications, Connect ksqlDB to Confluent Control Center, Connect Confluent Platform Components to Confluent Cloud, Quick Start: Moving Data In and Out of Kafka with Kafka Connect, Single Message Transforms for Confluent Platform, Getting started with RBAC and Kafka Connect, Configuring Kafka Client Authentication with LDAP, Authorization using Role-Based Access Control, Tutorial: Group-Based Authorization Using LDAP, Configure MDS to Manage Centralized Audit Logs, Configuring Audit Logs using the Properties File, Log in to Control Center when RBAC enabled, Transition Standard Active-Passive Data Centers to a Multi-Region Stretched Cluster, Replicator for Multi-Datacenter Replication, Tutorial: Replicating Data Across Clusters, Installing and Configuring Control Center, Check Control Center Version and Enable Auto-Update, Connecting Control Center to Confluent Cloud, Configure Confluent Platform Components to Communicate with MDS over TLS/SSL, Configure mTLS Authentication and RBAC for Kafka Brokers, Configure Kerberos Authentication for Brokers Running MDS, Configure LDAP Group-Based Authorization for MDS, Best Practices to Secure Your Apache Kafka Deployment. Therefore, if the Kafka brokers are configured for security, you should also configure Schema Registry to use security. document.write(new Date().getFullYear()); in three places: The typical use case for Confluent Monitoring Interceptors is to provide monitoring Then choose the location of where the secrets file will reside on your local host (not where the Confluent Platform services rune.g., /path/to/secrets.txt). Securing Kafka Connect requires that you configure security for: Configure security for Kafka Connect as described in the section below. Starting in Confluent Platform version 5.5.0, the version of ZooKeeper that is bundled with Kafka supports TLS/SSL. Source connector: configure the Confluent Monitoring Interceptors for TLS/SSL encryption with the producer prefix. A second deployment option includes protection on the Consumers only, and a third option supports ksqlDB with the SecuPi Agent installed on each ksqlDB server. Here is an example For example: These instructions are based on the assumption that you are installing Confluent Platform by using ZIP or TAR archives. For a list of all REST API ssl. Taking on a bit more complexity, you could encrypt data at the storage layer with encrypted volumes using specialized kernel modules that support process-based ACLs, but still someone who gained access could potentially see the values in cleartext. authorization to block access. Now, you are ready to generate the master encryption key: As the output indicates, the master encryption key cannot be retrieved later so make sure to save it somewhere. Secret Protection, a commercial feature, encrypts secrets within the configuration file itself and does not expose the secrets in log files. security between: You may also refer to the complete list of REST Proxy configuration options. Here is a snippet from a properties file with standard SSL configurations that users often dont want in cleartext: For Apache Kafka, in which services read configuration files on startup, the question arises: how should you protect these secrets? authentication (for example, TLS, SASL). For details, refer to Adding security to a running cluster. For more self-paced learning, feel free to explore our security tutorials as well: Yeva Byzek is an integration architect at Confluent designing solutions and building demos for developers and operators of Apache Kafka. It allows Site Reliability Engineers (SREs), developers, security teams, and infrastructure teams to gain insights to how. See the JCA Providers Documentation for more information. * properties are not defined then the ssl. When RBAC is enabled, Control Center Confluent Cloud is a fully-managed Apache Kafka service available on all three major clouds. Try it free today. For TLS/SSL with the REST API, configure the following additional properties: Verify that the client has configured interceptors. around an Apache Kafka-based single source of truth. In the output of this command you should see the servers certificate: You can find more details on this in the Oracle documentation on debugging SSL/TLS connections. offsets). Here is an example subset of configuration properties to add for TLS/SSL encryption: To see an example Confluent Replicator configuration, see the SSL source demo script. Note that as important to restrict access to these files via file system permissions. Learn important stream processing concepts, use cases, and several interesting business problems. protocol://host:port,protocol2://host2:port, "/etc/kafka/secrets/kafka.connect.truststore.jks", general security configuration for Connect workers, etc/confluent-control-center/control-center.properties, confluent.monitoring.interceptor.security.protocol=SSL, producer.confluent.monitoring.interceptor.security.protocol=SSL, "io.confluent.monitoring.clients.interceptor.MonitoringConsumerInterceptor", "src.consumer.confluent.monitoring.interceptor.bootstrap.servers", "src.consumer.confluent.monitoring.interceptor.security.protocol", "src.consumer.confluent.monitoring.interceptor.ssl.truststore.location", "/var/ssl/private/kafka.client.truststore.jks", "src.consumer.confluent.monitoring.interceptor.ssl.truststore.password", Building Data Pipelines with Apache Kafka and Confluent, Event Sourcing and Event Storage with Apache Kafka, Hybrid Deployment to Confluent Cloud Tutorial, Tutorial: Introduction to Streaming Application Development, Observability for Apache Kafka Clients to Confluent Cloud, Google Kubernetes Engine to Confluent Cloud with Confluent Replicator, Azure Kubernetes Service to Confluent Cloud with Confluent Replicator, Confluent Replicator to Confluent Cloud Configurations, Confluent Platform on Google Kubernetes Engine, Confluent Platform on Azure Kubernetes Service, Clickstream Data Analysis Pipeline Using ksqlDB, DevOps for Apache Kafka with Kubernetes and GitOps, Case Study: Kafka Connect management with GitOps, Using Confluent Platform systemd Service Unit Files, Pipelining with Kafka Connect and Kafka Streams, Migrate Confluent Cloud ksqlDB applications, Connect ksqlDB to Confluent Control Center, Connect Confluent Platform Components to Confluent Cloud, Quick Start: Moving Data In and Out of Kafka with Kafka Connect, Single Message Transforms for Confluent Platform, Getting started with RBAC and Kafka Connect, Configuring Kafka Client Authentication with LDAP, Authorization using Role-Based Access Control, Tutorial: Group-Based Authorization Using LDAP, Configure MDS to Manage Centralized Audit Logs, Configuring Audit Logs using the Properties File, Log in to Control Center when RBAC enabled, Transition Standard Active-Passive Data Centers to a Multi-Region Stretched Cluster, Replicator for Multi-Datacenter Replication, Tutorial: Replicating Data Across Clusters, Installing and Configuring Control Center, Check Control Center Version and Enable Auto-Update, Connecting Control Center to Confluent Cloud, Configure Confluent Platform Components to Communicate with MDS over TLS/SSL, Configure mTLS Authentication and RBAC for Kafka Brokers, Configure Kerberos Authentication for Brokers Running MDS, Configure LDAP Group-Based Authorization for MDS, JCE Unlimited Strength also authenticates the client certificate. Copyright Confluent, Inc. 2014-2022. If no parameter with prefix. Copyright Confluent, Inc. 2014-2022. and would appear as ssl.enabled.protocols Additionally, if you are using Confluent Control Center streams monitoring for Kafka Connect, configure security for: Configure the top-level settings in the Connect workers to use TLS/SSL by adding these However, the secrets file has a new encrypted value for this file/parameter pair. authentication is achieved by removing the broker or clients certificate from Here is strength of cryptographic algorithms available by default. The most common integration method is through installing a single JAR file on each Producer and Consumer process. Confluent and SecuPi combine an event streaming platform with centrally managed, policy-based, Attribute Based Access Control (ABAC) and privacy compliant solution with data encryption and dynamic masking that enforces the same consistent data security rules, on-premises or in the Cloud. Sink connector: configure the Confluent Monitoring Interceptors for TLS/SSL encryption with the consumer prefix. Any client can communicate to Kafka brokers using the PLAINTEXT port. exchange algorithm used to negotiate the security settings for a network connection An embedded consumer inside Replicator consumes data from the source cluster, and an embedded producer inside the Kafka Connect worker produces data to the destination cluster. the certificate to authenticate the broker. Here is an example subset of configuration properties to add for SSL encryption. document.write(new Date().getFullYear()); To learn more, refer to If client authentication is not required by the broker, the following is a minimal Now you can deploy end-to-end Secret Protection in your production event pipeline, including the brokers, Connect, KSQL, Confluent Schema Registry, Confluent Control Center, Confluent REST Proxy, etc. The new Producer and Consumer clients support security for Kafka versions 0.9.0 and higher. this diagram. Fully distributed, tightly integrated data protection applied as far upstream as possible in the data flow. For an example that shows this in action, see the Confluent Platform demo. If at least one parameter with this prefix exists, the, implementation uses only the SSL parameters with this prefix and ignores all SSL, parameters without this prefix. * exchange algorithm used to negotiate the security settings for a network workers by adding these properties in connect-distributed.properties, depending In this topic, TLS Depending on whether the connector is a source or sink connector: For source connectors: configure the same properties adding the producer prefix. These top-level settings are subset of kafka-rest.properties configuration parameters to configure HTTPS: Then, configure SSL encryption between REST proxy and the Kafka cluster. Enabling TLS may have a performance impact due to encryption overhead. The secrets file will contain encrypted secrets for the master encryption key, data encryption key, and configuration parameters along with their metadata, such as which cipher was used for encryption. and has been deprecated since June 2015. client will trust any certificate that was signed by the CA in the truststore. View the contents of the local secrets file /path/to/secrets.txt. The security tutorial provides an example of how to enable security features on Confluent Platform, but that takes extra steps to generate the keys and certificates and to add the TLS configurations. Configure all brokers in the Kafka cluster to accept secure connections from clients. if being used for a producer, must be prefixed with producer. Each logical client needs a private-key/certificate pair if client the client. If you need to change the value in the future, you can update it directly using the CLI. A cipher suite is a named combination of authentication, encryption, MAC address, and key For demos of common security configurations see: Replicator security demos. Authorization using Role-Based Access Control. SecuPi overlays all of the required granular, fine-grained access controls, accountability and privacy compliance functionality without changing Producer, Consumer and ksqlDB processes. SecuPi runs on each Producer and Consumer processes as required without introducing a single point of failure or performance bottleneck. This is a tuple that directs the service to look up the encrypted value of the file/parameter pair connect-avro-distributed.properties/config.storage.topic from the /path/to/secrets-remote.txt secrets file. configuration example that you can store in a client properties file client-ssl.properties. In the last few years, weve seen hugely impactful cyberattacks that have grabbed the attention of the media, the security community, and the IT industry. as well. Jurisdiction Policy Files producer.confluent.monitoring.interceptor.security.protocol=SSL. an example subset of kafka-rest.properties configuration parameters to add The name of the security provider used for TLS/SSL connections. which the client authenticates the server certificate. Confluent Platform is the central nervous system for a business, uniting your organization Then choose the exact path for where the secrets file will reside on the remote hosts where the Confluent Platform services run. To get started with this feature, we will step through a few examples. used by sink connectors. It is frequently used to store mission-critical data, and therefore enabling security features are crucial. Try it out yourself. SecuPi then enforces the centrally managed policy (rules) for selective field level encryption, decryption or masking and provides a completely independent audit trail of all access to sensitive or regulated data. to the broker properties file (it defaults to PLAINTEXT): Tell the Apache Kafka brokers on which ports to listen for client and inter-broker This sent in the clear. Configures the listener used for communication between workers. It is frequently used to store if both support it. support any SASL mechanism other than OAUTHBEARER. By default, Apache Kafka communicates in PLAINTEXT, which means that all data is Replicator version 4.0 and earlier requires a connection to ZooKeeper in the origin and destination Kafka clusters. configuration and code instead of TLS. this mechanism (certificate revocation is typically done using Certificate Revocation Learn More | Confluent Terraform Provider, Independent Network Lifecycle Management and more within our Q322 launch! Review your configurations. We recommend that you operationalize this workflow by augmenting your orchestration tooling to enable Secret Protection on the destination hosts. Learn More | Confluent Terraform Provider, Independent Network Lifecycle Management and more within our Q322 launch! TLS uses private-key/certificate pairs, which are used during the TLS handshake The list of protocols enabled for TLS/SSL connections. If you are using the Kafka Streams API, you can read on how to configure equivalent ssl.cipher.suites cryptography toolkit that provides an implementation of the Transport Layer If neither is used, then the cluster is wide open This default should be fine for most cases. encryption based on OpenSSL, an open source Apache, Apache Kafka, Kafka, and associated open source project names are trademarks of the Apache Software Foundation, Join us for a live demo of Confluent Cloud, the industrys only fully managed, cloud-native event streaming platform powered by Apache Kafka, In this online talk series, learn key concepts, use cases and best practices to harness the power of real-time streams for microservices architectures, See how five organizations across a wide range of industries leveraged Confluent to build a new class of event-driven microservices. To see an example Confluent Replicator configuration, see the SSL destination demo script. Note that if the listeners.https.ssl. internal topics which are used to track the clusters state (for example, configs and . Confluent Platform is the central nervous system for a business, uniting your organization around an Apache Kafka-based single source of truth. Since this stores passwords directly in the broker configuration Otherwise, clients and servers fallback to TLSv1.2 (assuming both support at least TLSv1.2). If stronger algorithms used for Confluent Control Center and Auto Data Balancer. Confluent Control Center uses Kafka Streams as a state store, so if all the Kafka brokers in the cluster backing Control Center are secured, then the Control Center application also needs to be secured. Here is an example that sets the ssl. Both the master key and data encryption key are then used to encrypt the secrets in the configuration files. data to a separate monitoring cluster that most likely has different configurations. Confluent Platform 5.3 introduces a simple solution for secret encryption. In the latest major version update of the Confluent CLI, weve packed all of the functionality from our cloud-based ccloud CLI into the existing confluent CLI client! If you want to enable TLS for inter-broker communication, add the following Now, you are ready to encrypt this field: As you can see, the configuration parameter config.storage.topic setting was changed from connect-configs to ${securepass:/path/to/secrets-remote.txt:connect-avro-distributed.properties/config.storage.topic}. properties will apply, so be sure to define all of the necessary listeners.https.ssl. default security provider of the JVM. Enter this passphrase into a file (e.g., /path/to/passphrase.txt), to be passed into the CLI, to avoid logging history showing the passphrase. You can configure TLS for encryption, but you can also configure TLS for authentication. file on the brokers in the Kafka cluster being monitored. to trusted IPs in such cases. By default, there is no encryption or authentication, nor are ACLs configured. You will also learn how to implement this workflow using Format Preserving Encryption (FPE). Interceptor configurations do not inherit configurations for the monitored component. Due to import regulations in some countries, the Oracle implementation limits the The CA method is outlined in Apache, Apache Kafka, Kafka, and associated open source project names are trademarks of the Apache Software Foundation, Confluent vs. Kafka: Why you need Confluent, Streaming Use Cases to transform your business. SSL and The end result is that even if someone gains access to a configuration file, all they would be able to see are encrypted secrets, and they have no way to decrypt them without knowing the master encryption key. Configure the Connect Therefore, instead of encrypting a password, we will encrypt a basic configuration parameter, but the steps are exactly the same. This section describes how to enable security for Kafka Connect. critical that access using this port is restricted to trusted clients only. mission-critical data, and therefore enabling security features are crucial. process. simply define the listeners.https.ssl. For Confluent Control Center stream monitoring to work with Kafka Connect, you must configure TLS/SSL will trust any certificate listed in the truststore. must be obtained and installed in the JDK/JRE. You may also have a requirement to rotate the master encryption key or data encryption key on a regular basis. parameters to add for TLS/SSL encryption: Securing Confluent REST Proxy with TLS/SSL encryption requires that you configure In the most common use case, you would want to encrypt passwords. the server authenticates the client (also called two-way authentication). Learn More | Confluent Terraform Provider, Independent Network Lifecycle Management and more within our Q322 launch! Apache, Apache Kafka, Kafka, and associated open source project names are trademarks of the Apache Software Foundation, Export the master encryption key into the environment on every host that will have a configuration file with secret protection, Distribute the secrets file: copy the secrets file, Propagate the necessary configuration file changes: update the configuration file on all hosts so that the configuration parameter now has the tuple for secrets, Restart the services if they were already running, Confluent vs. Kafka: Why you need Confluent, Streaming Use Cases to transform your business, Confluent command line interface (CLI) reference, The Easiest Way to Configure Security for Clients AND Servers, Building a Hybrid Cloud Data Pipeline is Even Easier with Confluent CLI v2, Securing Your Logs in Confluent Cloud with HashiCorp Vault, How Confluent Can Help Optimize and Modernize Your SIEM for Better Cybersecurity, Restricting network access to the hosts running the services, Setting permissions on the configuration files using standard Linux, Adding OS-level ACLs for more user granularity.
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