FAST STREAM = INJECTION

Overview

The Fast Stream Injection scenario will clone the data= and inject it back to the stream. No modification is performed on the data.

All filters added sit in WFPSampl= er's sublayer (which is weighted just below IPsec's sublayer), unless otherwise specified using the -sl <SUBLAYER> command line option. All filters are associated with WFPSampler's provider.

This scenario is meant to display the performance impa= ct of stream injection. All injection is performed synchronously (inline) from within the ClassifyFastStreamIn= jection().

CompleteFastStreamInjection() will indicate the final status of the data’s injection. This function will also free any alloca= ted memory.

The following diagram shows how the code flows for this callout:

=
Figure A. Code flow for Fast Stream Injection Scenario

Applicable Layers

v FWPM_LAYER_STREAM_V4

v FWPM_LAYER_STREAM_V6

Command Line Usage

Option	Argument	Meaning
-s	FAST_STREAM_INJECTION	Implement the FAST_STREAM_INJECTION scenario
-l	Applicable Layer	Layer at which this filter will apply
-sl	Applicable subLayer	SubLayer to associate with the filter= . [default is WFPSAMPLER_SUBLAYER].
-v		Make the objects associated with this scenario’s instance dynamic=
-b		Make the objects associated with this scenario’s instance availab= le during boot-time
-r		Remove objects associated with this scenario instance
-?		Display help

“WFPSampler.E= xe -s FAST_STREAM_INJECTION -?“ provides help output

“WFPSampler.E= xe -s FAST_STREAM_INJECTION -l FWPM_LAYER_STREAM_V4 -v“ a= dds a dynamic filter (-v) at FWPM_LAYER_STREAM_V4 (-l) which references the appropriate callout. This filter will have no conditions, meaning it will act on all traffic seen at = this layer.

“WFPSampler.E= xe -s FAST_STREAM_INJECTION -l FWPM_LAYER_STREAM_V4 -v -r“ removes (-r) the dynamic filter (-v) at FWPM_LAYER_STRE= AM_V4 (-l) which references the appr= opriate callout.

“WFPSampler.E= xe -s FAST_STREAM_INJECTION -l FWPM_LAYER_STREAM_V4 -ipla 1.0.0.1 -ipra 1.0.0.254 –i= prp 80“ adds a persistent filter at FWPM_LAYER_STREAM_V4 (-l) which references the appropriate callout. This filter will have 3 conditions; FWPM_CONDITION_IP_LOCAL_ADDRESS (-ipla= ) equals 1.0.0.1, FWPM_CONDITION_IP_REMOTE_ADDRESS (-ipra) equals 1.0.0.254, and FWPM_CONDITION_IP_REMOTE_PORT (-iprp) equal 80.

For a list of conditions applicable to each layer, ref= er to Filtering Conditions Available at Each Filtering Layer.

For a list of command line parameters for configuring = each condition, refer to Conditions for Command Line.