Node-to-node encryption protects data transferred between nodes, including gossip communication, in a cluster using SSL (Secure Sockets Layer).
To enable node-to-node SSL, you must set the server_encryption_options in the cassandra.yaml file.
On each node under sever_encryption_options:
The available options are:
- dc: Cassandra encrypts the traffic between the data centers.
- rack: Cassandra encrypts the traffic between the racks.
- Set the appropriate paths to your .keystore and .truststore files.
- Provide the required passwords. The passwords must match the passwords used when generating the keystore and truststore.
- To enable client certificate authentication, set require_client_auth to true. (Available starting with Cassandra 1.2.3.)
server_encryption_options: internode_encryption: <internode_option> keystore: resources/dse/conf/.keystore keystore_password: <keystore password> truststore: resources/dse/conf/.truststore truststore_password: <truststore password> require_client_auth: <true or false>
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