Oracle11增强了监听安全性（Oracle11增加监听）
Oracle 11: Enhancing Listener Security
Oracle 11 has brought about significant improvements in its security features, particularly with regards to listener security. The listener is an integral component of an Oracle Database system that is responsible for receiving connection requests from clients and forwarding them to the database server. The enhanced security measures in Oracle 11 m to ensure that the listener is protected agnst various security threats such as unauthorized access, Denial of Service (DoS) attacks, and more.
One of the most prominent improvements in Oracle 11 is the addition of Secure Sockets Layer (SSL) support for the listener. SSL is a protocol that provides secure communications over the internet by encrypting data transmissions between the client and server. With SSL enabled, the listener is protected from eavesdropping, tampering, and other forms of attacks that can compromise the confidentiality and integrity of the data transmitted.
To enable SSL support for the listener, you need to generate a certificate for the listener using the Oracle Wallet Manager. The certificate includes both a public key and a private key that are used for encryption and decryption of data respectively. Once the certificate is created, you can configure the listener to use SSL encryption by setting the SSL_CERTIFICATE parameter in the listener.ora file.
Another improvement in Oracle 11 is the addition of authentication control for the listener. Authentication ensures that only authorized users can access the listener and connect to the database. In Oracle 11, you can specify authentication rules for the listener in the listener.ora file using the new AUTHENTICATION parameter. There are four authentication methods avlable:
– None: No authentication is required for connecting to the listener.
– Local: Authentication is required for connections coming from the same machine as the listener.
– SSL: Authentication is required for connections that use SSL encryption.
– Password: Authentication is required for connections that use a password.
By configuring authentication rules for the listener, you ensure that only authorized users can access the database, reducing the risk of unauthorized access and data breaches.
In addition to SSL support and authentication control, Oracle 11 has also introduced a new feature called the Network Encryption Service (NES). The NES provides an additional layer of encryption for data transmissions between the client and server, further enhancing the security of the listener. The NES supports both SSL and Advanced Encryption Standard (AES) encryption, providing the flexibility to choose the encryption method that best suits your needs.
To enable the Network Encryption Service, you need to configure the listener using the new ENCRYPTION parameter in the listener.ora file. You can specify whether SSL or AES encryption should be used, as well as the encryption strength.
To summarize, Oracle 11 has made significant improvements in listener security by adding SSL support, authentication control, and the Network Encryption Service. By implementing these security measures, you can ensure that your database system is protected agnst various security threats, giving you peace of mind and confidence that your data is safe and secure.
