We are testing with ACS 2.6 server for LEAP authentication for AP340 series Access points and WLAN clients and configured to authenticate against NT user database (using external database). As recommended for dynamic WEP Keys we have set the Option 27, "session timeout" and it works fine . We are also planning to use ACS 2.6 for 3Com Remote Access server (RAS 1500) to authenticate dial-in users against NT user account (using Radius - we have selected Radius IETF while adding this device). The authentication works fine but the connection drops after the time set against option 27. We are using default user group and the same user will access using WLAN as well as through dial-up from home. Looks like the Radius setting are specific to user groups and we cannot specify settings based on NAS devices. Any suggestions to overcome this would be very much appreciated.
