Hi Guys, Just to tell you, I have reproduce the issue on another machine in RedHat 7.0 ppc64 IP of this system is different (10.7.19.168) which could explain the different IP in the session.log... But again, I don't know what is this IP addresse. .... running as X2Go Agent NXAGENT - Version 3.5.0 Copyright (C) 2001, 2011 NoMachine. See http://www.nomachine.com/ for more information. Info: Agent running with pid '11574'. Session: Starting session at 'Fri Jun 13 17:00:02 2014'. Info: Proxy running in server mode with pid '11574'. Info: Waiting for connection from 'localhost' on port '30003'. Warning: Refusing connection from '138.119.178.116'. 116' on port '30003'. Cordialement / Best Regards Sébastien Chabrolles Power Systems Benchmark Specialist IBM Client Center, Montpellier 1 rue vieille poste 34000 Montpellier FRANCE Tel +33 4 67 34 40 95 Email : s.chabrolles@fr.ibm.com Sauf indication contraire ci-dessus:/ Unless stated otherwise above: Compagnie IBM France Siège Social : 17 avenue de l'Europe, 92275 Bois-Colombes Cedex RCS Nanterre 552 118 465 Forme Sociale : S.A.S. Capital Social : 655.732.332,20 ? SIREN/SIRET : 552 118 465 03644 - Code NAF 6202A