Solution : https://service.sap.com/sap/support/notes/202934 (SAP Service marketplace login required)
Key words : 
- start -> programs -> sap system management console                     - mark, \usr\sap\<sid>\sys\exe\run', \usr\sap\<sid>\sys\profile, ip addressgoto destination -> gateway options, db-server field empty, \usr\sap\bin\rfcoscol, sap management console, /3            - call transaction os07            - choose, /general/misc/saposcol/nt, \usr\sap\bin
Related Notes : 
       
| 450741 | Setting up OS monitoring of remote servers for SAP services | 
| 338873 | Integrating ITS Performance Values in RZ20 | 
| 210890 | Monitoring NT servers (ITS, ...) using RZ20 | 
| 91488 | SAP Support Services - Central preparatory note | 
| 80474 | Automatic start of a gateway instance under NT |