José Ignacio Carretero Guarde added a comment - 22/Feb/19 3:01 PM The issue has been emailed: Time sent: 22/Feb/19 3:01 PM To: laura.fiorini@santannapisa.it with subject: *( HELP-15488 ) [Fiware-lab-help] How to check open ports VM * That questtion is not exactly related to FIWARE Lab but to the usage of SSH itself. Anyway, the answer is: it depends. It depends on how you use ssh -R, a) ssh -R <remote_port>:localhost:22 <user>@<remote_host> — Then, SSH will only do a reverse port for localhost and it is normal that difference in nmap b) ssh -R <remote_host>:<remote_port>:localhost:22 <user>@<remote_host> — Then, SSH will try to do open a connection in the remote host for everybody (so maybe no nmap difference), but this depends on your sshd_config file. Regards, José Ignacio From FIWARE JIRA - Main Help Desk ---- ------------------------------------------------------------------------------- Comments: ------------------------ Issue id: HELP-15488 Description: Hi ! I currently created a linux virtual machine on Fiware. I can access the virtual machine by using ssh with the floating ip. I can also establish the reverse ssh tunneling by using ssh. The only problem is that the "nmap" command performed on the virtual machine returns different results. Specifically "nmap localhost" shows that the port specified by the reverse tunneling is open, but "nmap <floatingip>" does not show any other port. Should the two commands show the same list ? How can i open the desired port on <floatingip>? Thanks for your help, Alessandra Sorrentino – *Alessandra Sorrentino * Ph.D. in Biorobotics MS.c in Artificial Intelligence and Robotics The BioRobotics Institute LAB : Service Robotics and Ambient Assisted Living Lab Scuola Superiore Sant'Anna Via Boccioni, 1 Viale Rinaldo Piaggio, 34 56037 Peccioli, Pisa - ITALY 56025 Pontedera, Pisa - ITALY Phone: +39 0587 672152 e-mail: alessandra.sorrentino@santannapisa.it <laura.fiorini@santannapisa.it> website: http://sssa.bioroboticsinstitute.it/ __________________________________________________________________________________________ You can get more information about our cookies and privacy policies on the following links: http://forge.fiware.org/plugins/mediawiki/wiki/fiware/index.php/FIWARE_Privacy_Policy http://forge.fiware.org/plugins/mediawiki/wiki/fiware/index.php/Cookies_Policy_FIWARE Fiware-lab-help mailing list Fiware-lab-help@lists.fiware.org https://lists.fiware.org/listinfo/fiware-lab-help [Created via e-mail received from: Alessandra Sorrentino <alessandra.sorrentino@santannapisa.it>] FIWARE Chapter: FIWARE GEri: Status: Open --------------------- This email was generated by FIWARE JIRA following an email received into the Main Help Desk.