Do you have the sysstat software package installed?
From the docs: http://docs.splunk.com/Documentation/UnixAddOn/5.2.4/User/Platformandhardwarerequirements
"What other items does the add-on require?
The Splunk Add-on for Unix and Linux requires the sysstat software package to function properly. You can download the sysstat utilities from the sysstat utilities download page or from your local package repository (depending on the version of *nix your host runs.)
On RHEL 7 and CentOS 7, the Splunk Add-on for Unix and Linux requires the net-tools software package to function properly. You can install the net-tools utilities from the OS' package repository using the command "sudo yum install net-tools"."
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I'm trying to setup multi-factor authentication using Duo Security on Splunk 6.6.5. Our Splunk server isn't allowed to talk to Duo's API servers directly due to security restrictions. I have set up a DUO auth proxy server following the guide here [https://duo.com/docs/authproxy_reference. When I go to setup the multi-factor authentication in Splunk there isn't a spot for a proxy server so I'm just specifying the proxy server as the API hostname. I'm getting timeout errors and am not able to finish setup. I was just wondering if anyone else has had to use a duo proxy server for mfa and what they did to get it to work.
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