On Tue, Feb 5, 2013 at 12:19 AM, Adrian Gibanel wrote: Just for the note and for others not doing the same "stupid" things like me.... I used this command vncviewer 192.168.1.102 ::5902 note the space between ip and ::5902 This way it seems the ip is totally ignored without returning any syntax error and so it implicitly tries localhost So clearly any client that tries to connect fails (if it is not a vnc server on that port itself, obviously...) And carefully reading the man page helps too: vncviewer [options] [host][::port] Instead if for example I install vncviewer and run the same command from the node itself it succeeds.... ;-) The correct command without the space vncviewer 192.168.1.102::5902 completes correctly I understood this noticing the "127.0.0.1" when prepending the "strace" command from the client and the wrong syntax: open("/etc/host.conf", O_RDONLY|O_CLOEXEC) = 3 fstat(3, {st_mode=S_IFREG|0644, st_size=9, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fa457040000 read(3, "multi on\n", 4096) = 9 read(3, "", 4096) = 0 close(3) = 0 munmap(0x7fa457040000, 4096) = 0 futex(0x38785b5ae0, FUTEX_WAKE_PRIVATE, 2147483647) = 0 open("/etc/hosts", O_RDONLY|O_CLOEXEC) = 3 fstat(3, {st_mode=S_IFREG|0644, st_size=250, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fa457040000 read(3, "127.0.0.1 localhost localhost."..., 4096) = 250 read(3, "", 4096) = 0 close(3) = 0 munmap(0x7fa457040000, 4096) = 0 socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 3 connect(3, {sa_family=AF_INET, sin_port=htons(5902), sin_addr=inet_addr("127.0.0.1")}, 16) = -1 ECONNREFUSED (Connection refused) close(3) = 0 ALso because connecting from the node itself with the wronh syntax I got the ESTABLISHED on localhost ip..... [g.cecchi@f18ovn03 ~]$ vncviewer 192.168.1.102::5902 [g.cecchi@f18ovn03 ~]$ sudo netstat -tan|grep 590 tcp 0 0 0.0.0.0:5900 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:5901 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:5902 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:5903 0.0.0.0:* LISTEN tcp 0 0 127.0.0.1:50509 127.0.0.1:5902 ESTABLISHED HIDH (tm for Hope It Doesn't Help: it means you are not as stupid as me... ;-) Gianluca