You can configure SSL for authentication between members and to protect your data during distribution. You can use SSL alone or in conjunction with the other GemFire security options. GemFire SSL connections use the Java Secure Sockets Extension (JSSE) package.
You can specify that SSL be used system-wide, or you can independently configure SSL for specific system components. The following list shows the system components that can be separately configured to communicate using SSL, and the kind of communications to which each component name refers:
gfshutility. The Pulse monitoring tool uses JMX for server-side communication with a locator, but SSL applies to this connection only if Pulse is located on an app server separate from the locator. When Pulse and the locator are colocated, JMX communication between the two does not involve a TCP connection, so SSL does not apply.
Specifying that a component is enabled for SSL applies to the component’s server-socket side and its client-socket side. For example, if you enable SSL for locators, then any process that communicates with a locator must also have SSL enabled.
You can use GemFire configuration properties to enable or disable SSL, to identify SSL ciphers and protocols, and to provide the location and credentials for key and trust stores.
For example, ssl-locator-alias would specify a name for the locator component’s certificate in the system key store.
Example: secure communications throughout
To implement secure SSL communications throughout an entire distributed system, each process should enable SSL for all components.
ssl-enabled-components=all ssl-keystore=secure/keystore.dat ssl-keystore-password=changeit ssl-truststore=secure/truststore.dat ssl-truststore-password=changeit
If the key store has multiple certificates you may want to specify the alias of the one you wish to use for each process. For instance,
Example: non-secure cluster communications, secure client/server
In this example, SSL is used to secure communications between the client and the server:
Cluster SSL is not enabled.
ssl-enabled-components=server,locator ssl-server-alias=server ssl-keystore=secure/keystore.dat ssl-keystore-password=changeit ssl-truststore=secure/truststore.dat ssl-truststore-password=changeit ssl-default-alias=Server-Cert
Cluster SSL is not enabled.
ssl-enabled-components=locator ssl-locator-alias=locator ssl-keystore=secure/keystore.dat ssl-keystore-password=changeit ssl-truststore=secure/truststore.dat ssl-truststore-password=changeit ssl-default-alias=Locator-Cert
On the client, the list of enabled components reflects the server’s configuration so the client knows how it is expected to communicate with (for example) servers and locators. Paths to keystore and truststore are local to the client.
In this example, the client’s trust store must trust both locator and server certificates. Since the client does not specify a certificate alias, SSL will use the default certificate in its key store.
ssl-enabled-components=server,locator ssl-keystore=secret/keystore.dat ssl-keystore-password=changeit ssl-truststore=secret/truststore.dat ssl-truststore-password=changeit
The following table lists the components you can configure to use SSL.
Table 1. SSL-Configurable Components
|cluster||Peer-to-peer communications among members of a distributed system|
|gateway||Communication across WAN gateways from one site to another|
|web||Web-based communication, including REST interfaces|
|jmx||Java management extension communications, including gfsh|
|locator||Communication with and between locators|
|server||Communication between clients and servers|
|all||All of the above|
The following table lists the properties you can use to configure SSL on your GemFire system.
Table 2. SSL Configuration Properties
|ssl‑enabled‑components||list of components for which to enable SSL||“all” or comma-separated list of components: cluster, gateway, web, jmx, locator, server|
|ssl-require-authentication||requires two-way authentication, applies to all components except web||boolean - if true (the default), two-way authentication is required|
|ssl‑web‑require‑authentication||requires two-way authentication for web component||boolean - if true, two-way authentication is required. Default is false (one-way authentication only)|
|ssl-default-alias||default certificate name||string - if empty, use first certificate in key store|
|ssl-component-alias||component-specific certificate name||string - applies to specified component|
|ssl-ciphers||list of SSL ciphers||comma-separated list (default “any”)|
|ssl-protocols||list of SSL protocols||comma-separated list (default “any”)|
|ssl-keystore||path to key store||string|
|ssl-keystore-password||key store password||string|
|ssl-truststore||path to trust store||string|
|ssl-truststore-password||trust store password||string|
Make sure your Java installation includes the JSSE API and familiarize yourself with its use. For information, see the Oracle JSSE website.
Configure SSL as needed for each connection type:
- Use locators for member discovery within the distributed systems and for client discovery of servers. See Configuring Peer-to-Peer Discovery and Configuring a Client/Server System.
Configure SSL properties as necessary for different component types, using the properties described above. For example, to enable SSL for communication between clients and servers you would configure properties in the
gemfire.propertiesfile similar to:
ssl-enabled-components=server ssl-protocols=any ssl-ciphers=SSL_RSA_WITH_NULL_MD5, SSL_RSA_WITH_NULL_SHA ssl-keystore=/path/to/trusted.keystore ssl-keystore-password=password ssl-truststore=/path/to/trusted.keystore ssl-truststore-password=password