|Oracle® Database Firewall Release Notes
Release 5.0 for Oracle Linux
Part Number E18694-04
|PDF · Mobi · ePub|
Release 5.0 for Oracle Linux
These Release Notes contain important information that was not included in the Oracle Database Firewall Release 5.0 documentation. They apply to Oracle Database Firewall on all platforms.
This document contains the following sections:
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Certain long running operations, such as deleting large amounts of traffic log data, may interfere with the Management Server Administration Console. Wait until these operations are complete before performing administration tasks.
Performing a Configuration Restore job will delete any Archive Jobs that have been made previously.
When you configure a High Availability environment, ensure that the specifications of the hardware used for paired Database Firewalls are identical.
When you use a Database Firewall system in DPE mode, with a Database Firewall between it and the rest of the network, you must turn off any IP spoofing detection rules in the Database Firewall.
Where the Database Firewall Management Server and the Bridge are connected to physically separate networks which are on the same subnet, Database Firewall may route responses out of the wrong interface. If physically separate networks are required, use different subnets.
When you upgrade an existing installation using a patch, you must restart the upgraded system after you install the patch. This ensures that all services can restart.
The system overwrites the existing configuration when you restore a configuration. This can lead to traffic logs being removed. If you merge an old configuration with current traffic logs, archive the data, restore the configuration, and then restore the data.
When you restore previously archived traffic log data to a system using the Restore functionality, determine whether or not these log files must be associated with a monitoring point. You can do this from the Repair Menu option in the System menu.
Do not create two or more protected databases containing the same database details (IP address and port number). This can cause problems with report generation.
If you enable or disable Local Monitor from a protected database being monitored in DPE mode, any existing database sessions terminate.
If a protected database being monitored receives more than 1000 alerts in one minute, subsequent alerts are not shown in the syslog messages. In this event, the following message is written to the syslog,:
WARN - More than 1000 alerts in the last minute. Subsequent alerts will not be processed.
When you configure Database Firewall, ensure that the System Time and Time Offset are set correctly so that Database Firewall Analyzer uses the correct time ranges when training on log data.
When you generate log search results, the percentage complete figure shown is based on the total number of statements that have been logged rather than the maximum results value specified when defining the Log Search Result.
Local Monitor does both a forward and reverse DNS lookup to determine if a session is from the local machine. If a DNS configuration is broken and prevents the server from doing the lookup successfully, then the Local Monitor cannot record console events. To ensure that Local Monitor records all local sessions, check that your DNS configuration is correct.
Database Firewall may not show a link light when connected to certain switches, for example, Cisco 2900. To ensure connectivity, in the System Settings menu on the System tab, set the link properties to use a manual setting rather than the Autonegotiated setting.
For Sybase ASE stored procedure auditing, the
tempdb database must be large enough to accommodate the generated temp files. To check this, perform the following steps:
sp_helpdb system stored procedure.
db_size columns for the
tempdb database should be larger than
sybsystemproc, at least by a couple of MBs.
When you set a Database Firewall to DPE mode (through Enforcement Point Settings or by restarting a Database Firewall with network passthrough), ensure that all connections to the database are forced to reconnect. In addition, in DPE mode, if you change Enforcement Point Settings, you must also force all database connections to reconnect.
Novelty policies in Oracle Database Firewall Release 5.0 do not allow the action warn or escalations. If baseline policies are loaded from Oracle Database Firewall Release 4.3 or earlier, with these options enabled, the Analyzer will update the policy. Ensure that the changes to your Novelty Policies are correct.
For any baselines created with Oracle Database Firewall prior to Release 5.0, you must manually update the following to ensure that all names are uppercase:
Sensitive field masking
Novelty policies based on table, column, or procedure names
The following error may appear in the
syslog after an update:
WARN - Failed to connect to database:ORA-12541: TNS:no listener
If this error appears, then run the following commands as the
. oraenvs lsnrctl start
Do not use Traffic log diagnostic mode on high throughput systems. (To find this mode, in either the Management Server or the standalone Database Firewall Administration Console, select the Reporting tab, and then from the Traffic Log menu, select View.) Doing so decreases the performance of the Oracle Database Firewall system.
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Oracle Database Firewall Release Notes, Release 5.0 for Oracle Linux
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