Authorizations for Registering External
Programs with the SAP Gateway 
Use
You can prevent external programs from being illegally registered with the SAP Gateway.
Prerequisites
Parameter gw/secinfo must be set on the path to the secinfo file so that the gateway can find the sec info file in the right place.
More information:
Making Security Settings for External Programs
Procedure
Define the file secinfo in the data directory of the gateway instance or in the place specified by parameter gw/secinfo.
The syntax of the entries is as follows:
USER=*, HOST=<host>,TP=<tp>;
Transaction program <tp> is allowed to register from <host>. Although the user entry is not used, you must specify it.
USER=*, HOST=*, TP=Hugo
USER=*, HOST=hw1414, TP=Hugo2
Program Hugo
is allowed to register from any host.
Program Hugo2 is only allowed to register from host hw1414.
HOST specifies from which host the program is
allowed to register.
If you specify HOST=*, the program may connect from any
host.
If the external program is to allowed to register from a number of hosts, you must create an entry for each host in the secinfo file.
You can view the current list of security entries using the gateway monitor.
More Information
Assigning Start Authorizations for External Programs
Making Security Settings for External Programs
Monitoring and Error
Handling in the SAP Gateway