[Snort-users] ignore_scanned on sfportscan

Hi. I have a lot of falses positivos triggered by the preprocessor sfportscan. 
All have as destined IP external hosts. So I add the next parameter

ignore_scanned { $EXTERNAL_NET }

but log says that EXTERNAL_NET cannot be used in ignore_scanned. But it4s 
indeed what I want!

the complete configuration:


preprocessor sfportscan: proto  { all } \
                         memcap { 10000000 } \
                         sense_level { low } \
                         ignore_scanners { $HOME_NET } \
                         ignore_scanned { $EXTERNAL_NET }  <---- this give the 
error

Thanks.



                
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