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McAfee ENS Linux best practice

Hello everyone. Can you guys suggest me best practice for ENS Linux. Especially on OAS. Customer reported that mfetpd are hitting 100% cpu usage.


Thank you 

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Re: McAfee ENS Linux best practice

  1. Confirmed if ENSL Version and Kernel version is compatible.


  1. You apply the McAfee suggested default exclusions as mentioned below and test if its still utilizes the high CPU.  


Here is the list of default exclusions in ENSLTP:

  • arc
  • ctl
  • dbf
  • dbl
  • dtx
  • frm
  • jar
  • log
  • myd
  • myi
  • rdo
  • vmdk
  • war

To configure the above exclusions using ePO:

  1. Log on to the ePO console.
  2. Click System Tree.
  3. Select a system where you need to modify the policy.
  4. Click Actions and select AgentModify Policies on a Single System.
  5. Select Endpoint Security Threat Prevention from the Product drop-down list.
  6. Select the On-Access Scan policy.
  7. Click Show Advanced.
  8. Navigate to the Process Settings section, Exclusions list.
  9. Click Add.
  10. Select File type (can include the ? wildcard) and type the first extension "arc" from the list above.
  11. Click Save.
  12. Repeat steps 9–11 to add the rest of the extensions.




  1. If its still utilizes high CPU then you may refer following instruction to enable OAS activity Monitor and capture its logs to confirm  the scanning request and try excluding those highest scanning request.


Please follow the KB:


Enable and capture of logs for 5 min during the high CPU with following  command:


To enable the On-Access Scan activity monitor:

10.6.5 & Prior: /opt/isec/ens/threatprevention/bin/isecav --oasactivitylog enable

10.6.6 & Later: /opt/McAfee/ens/tp/bin/mfetpcli --oasactivitylog enable


capture the above log  for 5 min during high CPU utilization.


To save the contents of this file in a text file:

10.6.5 & Prior: cat /opt/isec/ens/threatprevention/var/isectpdactivity.log | tee ENSLScanningFiles.txt

10.6.6 & Later: cat /var/McAfee/ens/log/tp/mfetpdactivity.log | tee ENSLScanningFiles.txt


Note: Don't forget to stop the OAS activity monitor .


To disable On-Access Scan activity monitor:

10.6.5 & Prior: /opt/isec/ens/threatprevention/bin/isecav --oasactivitylog disable

10.6.6 & Later: /opt/McAfee/ens/tp/bin/mfetpcli --oasactivitylog disable



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