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InTrust 11.4.1 - Integration into SIEM Solutions Through Event Forwarding

How Event Forwarding Statistics Can Help You

The event forwarding engine provides the following performance counters on the InTrust server where it runs:

  • Forwarded Events
  • Forwarded Events/sec
  • Processed Events
  • Processed Events/sec
  • Forwarded Bytes
  • Forwarded Bytes/sec

By analyzing these counters in the Performance Monitor, you can diagnose event forwarding problems and tailor your forwarded event traffic to your available bandwidth. See the following examples:

What the counters show

What it might mean

There are roughly as many forwarded events as processed events.

You are forwarding everything, which may not be what you really want. You could reduce SIEM costs by using forwarding filters.

The rate of forwarded bytes per second is very high for the bandwidth you have available.

You can save bandwidth by using forwarding filters.

There seems to be zero forwarding activity according to the counters.

Your current forwarding filters may be too restrictive. Try reconfiguring them.

Fine-Tuning Forwarding with Organization Parameters

InTrust provides several organization parameters as a way to tweak the operation of the event forwarding system. These parameters are organization-wide and affect all InTrust servers in the organization.

For details about where to change the parameters, see Organization Parameter Editor.

Organization parameter

Details

FORWARDING_MAX_SESSION_DURATION_SECONDS

This is the time-to-live of a TCP connection in seconds. By default, there is no limit. The value of this parameter cannot be lower than one-tenth the system TcpTimedWaitDelay value, which is defined manually (as DWORD) in the HKEY_LOCAL_ MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters registry key and is assumed to be 120 seconds by default. Therefore, you should not set the value of FORWARDING_MAX_SESSION_DURATION_SECONDS lower than 12.

FORWARDING_SESSION_KEEP_ALIVE_SECONDS

This is the interval in seconds for sending keep-alive packets over an idle TCP connection.

FORWARDING_MESSAGE_FRAMING

Whether to perform non-transparent (0) or octet-counting (1) message transfer, as detailed in RFC 6578.

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