Hello, So I wrote a little bash script to try and detect the event, so as to try and launch some commands to further debug... It seems to be able to catch it... currently it just run a server-status request, sleep 5, run server-status again, then run "top" command... Please see output bellow. The way the script works is by simply running "tcpdump port 1812" for 10 seconds and try to detect if we received RADIUS requests and we did not reply to any. In this occurrence, the server seems to have failed to reply to the status command twice... top shows that system load was never high. I guess next would be to run raddedug in such a moment? Any suggestions on other data I would want to grab, that can help identify why radiusd locks up, or fails to respond? Wed Jul 29 10:10:22 EDT 2015 Sent Status-Server Id 221 from 0.0.0.0:38772 to 127.0.0.1:18121 length 50 Message-Authenticator = 0x00 FreeRADIUS-Statistics-Type = Authentication Response-Packet-Type = Access-Accept Sent Status-Server Id 221 from 0.0.0.0:38772 to 127.0.0.1:18121 length 50 Message-Authenticator = 0x00 FreeRADIUS-Statistics-Type = Authentication Response-Packet-Type = Access-Accept Sent Status-Server Id 221 from 0.0.0.0:38772 to 127.0.0.1:18121 length 50 Message-Authenticator = 0x00 FreeRADIUS-Statistics-Type = Authentication Response-Packet-Type = Access-Accept Received Access-Accept Id 221 from 127.0.0.1:18121 to 0.0.0.0:0 length 140 FreeRADIUS-Total-Access-Requests = 193666 FreeRADIUS-Total-Access-Accepts = 18043 FreeRADIUS-Total-Access-Rejects = 3102 FreeRADIUS-Total-Access-Challenges = 172407 FreeRADIUS-Total-Auth-Responses = 193552 FreeRADIUS-Total-Auth-Duplicate-Requests = 84 FreeRADIUS-Total-Auth-Malformed-Requests = 0 FreeRADIUS-Total-Auth-Invalid-Requests = 0 FreeRADIUS-Total-Auth-Dropped-Requests = 88 FreeRADIUS-Total-Auth-Unknown-Types = 0 Sent Status-Server Id 28 from 0.0.0.0:40187 to 127.0.0.1:18121 length 50 Message-Authenticator = 0x00 FreeRADIUS-Statistics-Type = Authentication Response-Packet-Type = Access-Accept Received Access-Accept Id 28 from 127.0.0.1:18121 to 0.0.0.0:0 length 140 FreeRADIUS-Total-Access-Requests = 194192 FreeRADIUS-Total-Access-Accepts = 18044 FreeRADIUS-Total-Access-Rejects = 3107 FreeRADIUS-Total-Access-Challenges = 172443 FreeRADIUS-Total-Auth-Responses = 193594 FreeRADIUS-Total-Auth-Duplicate-Requests = 140 FreeRADIUS-Total-Auth-Malformed-Requests = 0 FreeRADIUS-Total-Auth-Invalid-Requests = 0 FreeRADIUS-Total-Auth-Dropped-Requests = 145 FreeRADIUS-Total-Auth-Unknown-Types = 0 top - 10:10:39 up 7 days, 10:42, 3 users, load average: 0.37, 0.12, 0.07 Tasks: 179 total, 1 running, 178 sleeping, 0 stopped, 0 zombie %Cpu(s): 0.5 us, 0.4 sy, 0.0 ni, 99.1 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st KiB Mem : 1884696 total, 1368184 free, 165676 used, 350836 buff/cache KiB Swap: 4194300 total, 4117172 free, 77128 used. 1447748 avail Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 25532 root 20 0 130032 1668 1200 R 5.9 0.1 0:00.02 top 1 root 20 0 206336 5048 2860 S 0.0 0.3 0:41.37 systemd 2 root 20 0 0 0 0 S 0.0 0.0 0:00.03 kthreadd 3 root 20 0 0 0 0 S 0.0 0.0 0:00.70 ksoftirqd/0 5 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/0:0H 7 root rt 0 0 0 0 S 0.0 0.0 0:00.65 migration/0 ...