Set this parameter to accept SAP GUI connections that are not protected with SNC on an SNC-enabled AS ABAP.
Per default, once SNC has been activated (snc/enable = 1), the AS ABAP rejects all SAP GUI connection requests that are not protected with SNC.
Set this parameter (see Valid entries, formats) to override the default configuration and accept unprotected connections.
If you allow unprotected connections, then the SAP GUI configuration determines whether or not the connection uses SNC protection.
0 (only SNC-protected logons are allowed)
snc/enable (activate SNC)
0 : Reject unprotected logons
1 : Accept unprotected logons
U : Accept unprotected logons for only those users who have the appropriate flag set in their user master record (see User Maintenance on AS ABAP).