The issue has been emailed:

• Time sent: 26/Apr/19 1:10 PM
• To: joan.llobera@gmail.com
• with subject: *(HELP-15736) [Fiware-lab-help] I cannot access a port of my virtual machine (altough I successfully activated ping) *
  

Dear Joan,
I'd like to know what interfaces is your program running and which ports.

If I try to test your port 8888, then:
nc -zv 185.52.32.61 8888
nc: connect to 185.52.32.61 port 8888 (tcp) failed: Connection refused

If I try to reach your port 80, then:
nc -zv 185.52.32.61 80
Connection to 185.52.32.61 80 port [tcp/http] succeeded!

It can also happen your SophiaAntipolis provider has another firewall closing your ports. The ports could be opened but the provider might have them filtered.

I'll assign this ticket to SophiaAntipolis support team. Please, answer with any relevant information to this email.

Regards,
José Ignacio

From FIWARE JIRA - Main Help Desk ----

-------------------------------------------------------------------------------
Comments:

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Issue id: HELP-15736
Description:
dear Fiware Lab Help,
after some playing around and trying several times, I have now a virtual
machine, with a small binary running. This small binary running has been
tested on a local server, and it successfully admitted connections through
port 8888

I have now moved the binary to the virtual machine, and it has been running
for some weeks. It seems to be stable.

Now, I have tried setting rules to allow access through this port on my
virtual machine to have the same communication.

First added this rule both for my security group. I now believe this only
owrks for virtual machines on your servers, so I also added it as on the
public network (the 0.0.0.0/0).

Neither of them allow my local application to connect through TCP.
Testing it with https://www.yougetsignal.com/tools/open-ports/
does tell me my port is closed.

I also tried with port 80, and that web page also told me that the port is
closed.
However, I managed to enable the ping service. And I can access it through
ssh.
And I can ping google.com from the virtual machine.

My account is associated to this email and my public ip is 185.52.32.61
I also attach a screenshot of my security rules.

What am I doing wrong?
Thanks,
Joan
[image: Screenshot 2019-04-25 13.54.30.png]

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[Created via e-mail received from: joan <joan.llobera@gmail.com>]

FIWARE Chapter:
FIWARE GEri:

Status: Open

---------------------
This email was generated by FIWARE JIRA following an email received into the Main Help Desk.

hi,
I am not doing anything in particular in the linux machine.
The server is configured to listen for TCP connections in port 8888
It is a simple unity3d project,
At the moment my program does nothing in port 80, although I plan to put a
simple http server there in the future.

If it works for port 80, it means I successfully opened port 80.
Despite the fact that I also opened port 8888 in the same way, it does not
work.
Therefore, it may well be that it is behind some kind of firewall.

How can I find out which ports my SophiaAntipolis provider is filtering?
I can change the port of my program, but I would need to know which ports
are accessible.

Any suggestion to how to do this is welcome.
I notice how you use the nc command, and will use it in this way in the
future.
Thanks,
Joan

On Fri, 26 Apr 2019, 13:11 Help-Desk, <jira-help-desk@jira.fiware.org>

hi,
since you said you could see port 80 open by port 8888 closed I have tried
to set up my service on port 80, instead of port 8888, but I was not
successful establishing a connection.
There must be some problem in my configuration?

Also, when I run
on my virtual machine, what I get is this:
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN
tcp 0 410 192.168.111.122:22 112.85.42.187:20754 LAST_ACK
tcp 0 256 192.168.111.122:22 217.126.82.25:50674
ESTABLISHED
tcp6 0 0 :::22 :::* LISTEN

there seems to be no open port except the 22.
I am wondering how I can connect my virtual machine ports 80 and 8888 to
the public ip that I have associated with my virtual machine.
Pointers to tutorials, or similar, are welcome, I am really new in this
stuff.

Thanks,
Joan

Missatge de Help-Desk <jira-help-desk@jira.fiware.org> del dia dv., 26
d’abr. 2019 a les 19:04:

–
---------------------------------------------------------
Joan Llobera - http://joan.llobera.name
joan.llobera@gmail.com

hi,
after many trials I think I found a configuration that allows connections
to my service through a port.
I will follow the same procedure from now on.
Thanks,
Joan

Missatge de Help-Desk <jira-help-desk@jira.fiware.org> del dia dj., 2 de

–
---------------------------------------------------------
Joan Llobera - http://joan.llobera.name
joan.llobera@gmail.com