Hello List: I have setup a 3Com TC box and having authentication problems. After entire weekend of going around circles and squares, now I ask for help. Here are the facts: RADIUS Server: ----------------------- RH9 freeRADIUS 0.9.3 3Com TC ------------- 1-HiPer NMC (8.6.3) 2-HiPer ARC (5.3.3) 10-HiPer DSP (3.5.12) =============================== I setup a RADIUS server & did a "radtest". I can authenticate a user. I have added this ONE user only for testing. Next I setup NTRadPing utility on a Window machine and authenticated the same <UID> & <PW>, no problem. In both cases I have DEBUG utility (radiusd -X) running on the RADIUS server and I can see the entries being authenticated. Next I have setup the 3Com TC. I believe, I have all the necessary entries. Port is setup to 1812, SecretKey is verified, IP address of the RADIUS server is correctly entered, etc. However, when I try to authenticate a user from 3Com: _auth <UID> <PW> No activity takes place on the RADIUS servers debug screen and authentication fails. There is nothing in the log file "/usr/local/var/log/radius/radius.log" other than "Ready to process requests". I have checked the cabling. Both ARC cards Ethernet ports are connected to a HUB which also connects to RADIUS server. When I am in CLI for ARC card, I can ping the RADIUS server's IP address and "HiPer>>" responds by saying that the server is ACTIVE. Having no activity on RADIUS server's DEBUG screen, I am assuming that 3Com is not connecting to the RADIUS server. By the way, I did dial into 3Com TC box and tried to connect as a Dial-In user, the authentication failed. If there is any place where I can see a log of the cause of the rejection of the authentication, I might be able to work my way. I do appreciate any suggestion help from this list. Thanks in advance. Kirti