07-14-2017 10:37 AM
08-07-2017 12:30 AM
in the CIF Miner queries are incremental, that basically means that:
- the first query performed after you create the node is for the last 7 days worth of indicators (this can be set using the initial_days parameter in the prototype)
- after the first query, each query will grab all the indicators added to the CIF server since the last poll
If you set sudden_death to true, only the indicators retrieved with the last query will be stored - all the old ones will be expired. The default behavior of the prototype is:
age_out: default: last_seen+30d sudden_death: false
That means that an indicator will survive for 30 days after the last time it was seen in a query.
That being said you can edit the file /opt/minemeld/supervisors/config/conf.d/minemeld-engine.conf and add "--verbose" on the command line. After that "sudo service minemeld restart". You will then be able to see the CIF query in the minemeld-engine.log file.
10-09-2017 11:36 AM - edited 10-09-2017 12:28 PM
After enabling the --verbose command line, I can see the CIF parameters of --reporttime and --reporttimeend with the values being about 60 minutes apart.
Essentially, I'm trying to understand the logic of the CIF miner to figure out how to properly configure a miner to receive the appropriate # of indicators from the feeds that we have access to while working within the limitations of the external block lists for the firewall model we utilize.
How does the last_seen value get calculated? Does minemeld store the indicators after each run and set the last_seen value for each indicator and compare regularly. Thanks for your help - Bill
10-15-2017 09:08 PM
yes, exactly. The CIF miner (as most of the Miners) have a local table where they store indicators. The indicators are refreshed after each poll, and based on the final result age out policy is applied. So basically using a last_seen+30d age out policy an indicator will expire 30 days after the last poll where it showed up.
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