This allows one to enable tunneling on the box and describe the mode of operation i.e. Secure or NonSecure. Secure mode means that this box will only accept connection from partners listed in the tunnel peer list. In the non- Secure mode any incoming IP address is accepted. This parameter may combine one of qTunnelEnable and qTunnelDisable (Enable/Disable set) with one of qTunnelSecure and qTunnelNonSecure (Secure/Nonsecure set); e.g. qTunnelEnable and qTunnelSecure is a legal combination. If a member of one set is not supplied on a 'write' operation, the value for that set remains unchanged. Changing this parameter may take effect for the tunnel immediately or may wait until the tunnel is restarted depending on the details of the implementation.