Environment
Novell Modular Authentication Service (NMAS) RADIUS 4.14
Novell NetWare 6.5
Novell NetWare 6.5
Situation
Error -1688 appears on the Radius console screen, or on the Radius
Debug console screen after enabling RADIUS debugging.
Resolution
The -1688 error code is an NMAS error code identifying concurrent
logins. To correct this issue, increase the number of allowed
concurrent logins.
Additional Information
Each additional service loaded over the RADIUS connection may also
require a connection. When implementing the NMAS Radius
service, it is suggested to allow two or more concurrent
connections. A single connection may only allow the RADIUS
authentication to succeed but other services (e.g. mapping a
network drive over a dial-up or VPN connection) to fail.