Configuring Profiler Database Preferences (NSM Procedure)
ScreenOS 6.2 supports application volume tracking (AVT), a feature that enables NSM to track network bandwidth usage on a per-application basis. The security device sends the NSM server periodic update messages containing details about port activity. NSM listens and processes these periodic update messages and maintains a cumulative count for each port. NSM displays this count on the console. NSM provides reports about application volume tracking. The AVT feature has the following limitations:
- Periodic updates maintained per port for each active session can slightly affect CPU performance.
- Accuracy of AVT data is dependent on communication with the NSM server. NSM, however, lacks a mechanism to ensure that periodic updates sent by AVT from ScreenOS are received, which may result in a lag between traffic instances and reporting of those instances. NSM maintains a cumulative count for all traffic on each port regardless of session, node, or protocol. The count displayed is a total across all sessions. Because updates are periodic, the currently displayed number of bytes in NSM may be inaccurate until the next update.
- You must use NSM to view the enhanced logging provided by AVT.
For more details on AVT, see the Network and Security Manager Administration Guide.
Use the Profiler Settings under the Tools menu to configure the Profiler preferences mentioned in Table 1. You can use the Profiler Settings dialog box to modify Profiler database settings and default settings for application volume tracking reports.
Data discovered by Profiler is stored in a database located on the NSM GUI server.
To modify profiler database preferences and application volume tracking settings:
- From the NSM main menu, select Tools > Preferences. The New Preferences dialog box is displayed.
- Click Profiler Settings.
- Modify settings as described in Table 1.
- Click OK.
Table 1: Profiler Database Preferences