Solution : https://service.sap.com/sap/support/notes/1265687 (SAP Service marketplace login required)
Key words :
\usr\sap\<system id>\<instance id>\j2ee\cluster\serverx\log\, port/sap/monitoring/componentinfo http, initial connection helps sap support, port/sap/monitoring/systeminfo, ep-pin-ai component, component ep-pin-ai, provide user/password information, additional information - http trace, sap netweaver portal, exception id
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| 605795 | Windows Terminal Server connection in remote support |
| 592085 | Installing HTTP Connect service |
| 494980 | Remote Support for an Enterprise Portal |