I have been asked to create a simple log of VPN usage. My plan was to track connection time and disconnection time and use Excel to provide a "VPN usage" figure. I am using Windows Server 2003 IAS/RADIUS for remote access policy. I have turned on the authentication and accounting logging features. This seems to give me a log of the user "connecting" and authenticating. Is there any way to include the disconnection in the log? The RADIUS client is a Cisco ASA 5510. Should I use syslogs from the firewall? Any help is appreciated.