Applies To:

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Manual Chapter: Reviewing Internal Parameters
Manual Chapter
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The Protocol Security Module has several internal parameters that control how the product functions. In almost all cases, you do not need to change the internal parameters from their default setting in order for your system to function effectively.
Table 6.1 lists the internal parameters, their default value, and a description of their purpose.
Defines a maximum URI length that the Security Enforcer can support in its internal buffers. If this number is higher than the URI length defined per file type, then this number is the limit. If this number is higher than the file type limit, then the file type limit sets the maximum URI length.
Specifies the maximum number of concurrent FTP connections that the Protocol Security Module can manage.
Specifies the maximum number of concurrent sessions that the Security Enforcer can handle.
Specifies the maximum number of concurrent SMTP connections that the Protocol Security Module can manage.
Specifies the maximum number of violation entries per violation type kept in memory. Note that this parameter applies only to the protocol security profiles.
Specifies the maximum number of concurrent long requests that the Security Enforcer can handle. A long request is a request longer than request_buffer_size and less than long_request_buffer_size.
Specifies, when set to 1, that data collection is enabled for both the graphs on the Overview screen and also for the Denial of Service attack prevention feature.
When set to 0, data collection is disabled.
If the value is -1, the system decides whether the URL requested is an HTTP request or an HTTPS request based on the incoming traffic.
If the value is 0, the system treats all incoming URL requests as HTTP requests.
If the value is 1, the system treats all incoming URL requests as HTTPS requests.
Specifies the maximum buffer size for a single instance of the accumulated response buffers. The system accumulates response buffers until their total size reaches the max_filtered_html_length.
0 (number of CPUs determines the number of threads)
Specifies, when the value is greater than zero, the number of threads that the Security Enforcer uses. When the value is 0, the number of CPUs in the system determines the number of threads.
Specifies the maximum memory size (in kilobytes) available for the Security Enforcers memory pools.
In the Protocol Security navigation pane, click Options.
The Advanced Configuration screen opens, where you can review the settings for the internal parameters.
Important: F5 Networks recommends that you change the values for the internal parameters only with the guidance of the F5 technical support.
If you change any of the parameter values for the internal parameters, it is easy to restore the default settings for those values.
1.
In the Protocol Security navigation pane, click Options.
The Advanced Configuration screen opens.
2.
Above (or below) the Advanced Configuration area, click the Restore Defaults button.
The system resets any changed parameter values to their factory settings.
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