Hello, I'm currently testing SimultaneousUse setting in WPA2 Enterprise WiFi environment. I'm quite new to Radius (both concepts and implementations). After reading this (very interesting) document [1], I assigned myself a first step: seeing useful data through radwho command, no matter if Freeradius relied on a completely different source on input to implement SimultaneousUse feature. In my testing, I'm having: # radwho Fri Sep 14 12:28:55 2018 : Error: Unable to check file "/var/log/freeradius/radutmp": No such file or directory radwho: Error reading /var/log/freeradius/radutmp: No such file or directory 1. I read in [2] then that /var/log/freeradius/radutmp is created by Freeradius whenever it receives accounting data. Is it correct on Debian Stretch when package's config is mostly left unchanged ? 2. At network level, I see that my WiFi AP are sending Account-Request and receiving back Account-Response. Does it prove Freeradius's Accounting is turned on and running or shall I for instance, read this Response content ? Is there a better way to look at Freeradius "running features" ? [1] https://github.com/FreeRADIUS/freeradius-server/blob/v3.0.x/doc/configuratio... [2] http://lists.freeradius.org/pipermail/freeradius-users/2014-April/071808.htm... Best regards