Hello to all, First of all,before sending this message, I have read the previous ones about the same problem. As far as I can understand, we have to have our NAS to send accounting packets. Also, we need to uncomment sradutmp and radutmp in radiusd.conf to start processing of accouting packets. Additionally, we need freeradius -X command for troubleshooting. To sum up, these are the basic rules that I have got. To mention my work detailly, on GNS3, I have one c7200 cisco router as NAS(for administration access to router only, not to provide an internet connection) and a freeradius server on ubuntu server 14.04. I configured my NAS to send accounting update per one minute. In /var/log/freeradius/radacct/(ip of the nas)/detail-(date), I can read a txt file where some accounting infos are written but when I issue "radwho" command, I can not see anything but the titles for non-written accounting details. I also issued freeradius -X command and got "ready to process request", my server can properly process authentication requests also. However, I'm not completely unsuccessful to get any output from radwho. I had done some configurations on freeradius and managed to get proper outputs with radwho on the same topology and system. Unfortunately, my server got disfunctioned when I had tried to configure it for active directory authentication. I could only recovered it by re-installing then I lost and forgot what I did to use radwho. I can't remember what I did to get radwho output before I lost whole configuration and what I can't notice now. Regards. Mert Uzun Istanbul Technical University Electrical Engineering 2nd Degree Undergraduate -- Mert Uzun Elektrik Mühendisliği Bölümü-2. Sınıf Öğrencisi