Custom RMI Socket Factory

RMI uses plain sockets. If you want to encrypt or compress that data you should create and use a custom RMI Socket factory.
You can create a custom RMISocketFactory that is used by all remote object, or you can associate it with only some objects.
The steps are:
1. Implement a custom ServerSocket and Socket classes (by extending the existing ones) which implement the encryption or compression you want.
2. Implement a custom RMIClientFactory which returns one of your custom sockets. Basically, just redefine the createSocket function. This class must be serializable.
3. Implement a custom RMIServerSocketFactory, as before. It need not be serializable.