Your version of Asterisk is a year and a half old, so upgrading would be good. As well we’d need more information - such as the console output and whether it says anything. You should also confirm the attempt is reaching the VM at all by using tcpdump to get a packet capture.
Yes, the attempts reaching the server(i’m trying localhost) and the result is just a timeout and “connection closed closed for server”.
jcolp, thanks for your reply, I’ll update the “asterisk” and see what happens, another setting that I was not noticed was the “ulimit open files”, I adjusted and apparently did not happen again.