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What are the parameters of oracle security, many novices are not very clear about this, in order to help you solve this problem, the following editor will explain for you in detail, people with this need can come to learn, I hope you can gain something.

Oracle Database11g adds a new set of parameters to strengthen the default security of the database. These parameters are system-wide static parameters.

(1) use case-sensitive passwords to enhance security

The new parameter SEC_CASE_SENSITIVE_LOGON allows you to set case-sensitive user passwords. Oracle recommends that you keep the default setting of TRUE. Set this parameter to FALSE to specify a case-insensitive password for backward compatibility.

ALTER SYSTEM SETSEC_CASE_SENSITIVE_LOGON = FALSE

Note: disabling case sensitivity makes passwords more vulnerable to brute force attacks.

(2) prevent denial of service (DoS) attacks

The SEC_PROTOCOL_ERROR_FURTHER_ACTION parameter: specifies the action to be performed on the client connection: continue, disconnect, or delay accepting the request.

SEC_PROTOCOL_ERROR_TRACE_ACTION parameter: a monitoring operation is specified: NONE, TRACE, LOG, or ALERT.

(3) prevent brute force attacks

The default setting of the new initialization parameter SEC_MAX_FAILED_LOGIN_ATTEMPTS is 10, which means that the connection is automatically disconnected after the specified number of connection attempts are reached. This parameter is enforced even if the password profile is not enabled.

This parameter prevents the program from connecting to the database and then trying the password hundreds of times to pass authentication.

SEC_PROTOCOL_ERROR_FURTHER_ACTION

SEC_PROTOCOL_ERROR_FURTHER_ACTION specifies the further execution of a server

Process when receiving bad packets from a possibly malicious client.

Values:

■ CONTINUE

The server process continues execution. The database server may be subject to a

Denial of Service (DoS) if bad packets cont inue to be sent by a malicious client.

■ (DELAY,integer)

The client experiences a delay of integer seconds before the server process accepts

The next request from the same client co nnection. Malicious cl ients are prevented

From excessive consumption of server resources while legitimate clients experience

A degradation in performance but can continue to function.

■ (DROP, integer)

The server forcefully terminates the client connection after integer cumulative bad

Packets. The server protects itself at the ex pense of the client (for example, a client

Transaction may be lost). The client may reconnect and attempt the same

Operation.

Property Description

Parameter type Integer

Default value 10

Modifiable No

Range of values 1 to unlimited

Basic No

Property Description

Parameter type String

Syntax SEC_PROTOCOL_ERROR_FURTHER_ACTION = {CONTINUE |

(DELAY,integer) | (DROP, integer)}

Default value CONTINUE

Modifiable ALTER SESSION, ALTER SYSTEM

Basic No

SEC_PROTOCOL_ERROR_TRACE_ACTION

1-154 Oracle Database Reference

SEC_PROTOCOL_ERROR_TRACE_ACTION

SEC_PROTOCOL_ERROR_TRACE_ACTION specifies the action th at the database should

Take when bad packets are received from a possibly malicious client.

Values:

■ NONE

The database server ignores the bad packets and does not generate any trace files

Or log messages.

■ TRACE

A detailed trace file is generated when bad packets are received, which can be

Used to debug any problems in client/server communication.

■ LOG

A minimal log message is printed in the alert logfile and in the server trace file. A

Minimal amount of disk space is used.

■ ALERT

An alert message is sent to a DBA or monitoring console.

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