# Which ports have to be open to access the robot controller through VPN?

**URL:** <https://tech-community.robotics.abb.com/t/which-ports-have-to-be-open-to-access-the-robot-controller-through-vpn/6925>\
**Category:** RobotStudio\
**Tags:** robotstudio, remote-controller, vpn\
**Created:** [December 11, 2015, 8:40am UTC](https://tech-community.robotics.abb.com/t/which-ports-have-to-be-open-to-access-the-robot-controller-through-vpn/6925 "2015-12-11T08:40:01Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![sikilde](https://avatars.discourse-cdn.com/v4/letter/s/8e7dd6/32.png) [@sikilde](https://tech-community.robotics.abb.com/u/sikilde)\
**Post date:** [December 11, 2015, 8:40am UTC](https://tech-community.robotics.abb.com/t/which-ports-have-to-be-open-to-access-the-robot-controller-through-vpn/6925/1 "2015-12-11T08:40:01Z")

</div>

Hello!

I’m trying to reach a robot over VPN.

By opening port 5512, 5513, 5514 and 5515 it’s possible to connect to the robot, but I’m unable to browse the RAPID or even take backups..

The ports 20 and 21 is also open.

I got this error in RobotStudio today:

The remote server returned an error: 227 Entering Passive Mode (10,47,46,213,4,28)

Best Regards,  
Kilde

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<div class="post-metadata">

**Author:** ![sikilde](https://avatars.discourse-cdn.com/v4/letter/s/8e7dd6/32.png) [@sikilde](https://tech-community.robotics.abb.com/u/sikilde)\
**Post date:** [January 5, 2016, 8:25am UTC](https://tech-community.robotics.abb.com/t/which-ports-have-to-be-open-to-access-the-robot-controller-through-vpn/6925/2 "2016-01-05T08:25:24Z")

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Nobody knows? Not even where to look?

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<div class="post-metadata">

**Author:** ![graemepaulin](https://avatars.discourse-cdn.com/v4/letter/g/258eb7/32.png) [@graemepaulin](https://tech-community.robotics.abb.com/u/graemepaulin)\
**Post date:** [January 5, 2016, 10:49pm UTC](https://tech-community.robotics.abb.com/t/which-ports-have-to-be-open-to-access-the-robot-controller-through-vpn/6925/3 "2016-01-05T22:49:48Z")

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Hi,

The below information is in the RobotStudio help.

Regards

Graeme

**Network connection**

To enable a connection to a controller on a subnet or over the local network, the relevant network traffic must be allowed through any firewalls between the PC and the controller.

The firewalls must be configured to accept the following TCP/IP traffic from the PC to the controller:

- UDP port 5514 (unicast)

- TCP port 5515

- Passive FTP

- 

|   
Name  
 |   
Action  
 |   
Direction  
 |   
Protocol  
 |   
Address  
 |   
Local Service  
 |   
Service  
 |   
Application  
 |
| --- | --- | --- | --- | --- | --- | --- | --- |
|   
RobNetscanHost  
 |   
Allow  
 |   
Out  
 |   
UDP/IP  
 |   
Any  
 |   
Any  
 |   
5512,5514  
 |   
robnetscanhost.exe  
 |
|   
IRS5Controller  
 |   
Allow  
 |   
In  
 |   
UDP/IP  
 |   
Any  
 |   
5513  
 |   
Any  
 |   
robnetscanhost.exe  
 |
|   
RobComCtrlServer  
 |   
Allow  
 |   
Out  
 |   
TCP/IP  
 |   
Any  
 |   
Any  
 |   
5515  
 |   
robcomctrlserver.exe  
 |
|   
RobotFTP  
 |   
Allow  
 |   
Out  
 |   
TCP/IP  
 |   
Any  
 |   
Any  
 |   
FTP(21)  
 |   
Any  
 |

In addition, the following table describes the necessary firewall configurations for the RobotWare option, Integrated Vision:

|   
Name  
 |   
Action  
 |   
Direction  
 |   
Protocol  
 |   
Address  
 |   
Local Service  
 |   
Service  
 |   
Application  
 |
| --- | --- | --- | --- | --- | --- | --- | --- |
|   
Telnet  
 |   
Allow  
 |   
Out  
 |   
TCP/IP  
 |   
Any  
 |   
Any  
 |   
23  
 |   
RobotStudio.exe  
 |
|   
In-Sight Protocol  
 |   
Allow  
 |   
Out  
 |   
TCP/IP  
 |   
Any  
 |   
Any  
 |   
1069  
 |   
RobotStudio.exe  
 |
|   
In-Sight Discovery  
 |   
Allow  
 |   
In/Out  
 |   
UDP/IP  
 |   
Any  
 |   
1069  
 |   
1069  
 |   
RobotStudio.exe  
 |
|   
Upgrade port (PC only)  
 |   
Allow  
 |   
Out  
 |   
TCP/IP  
 |   
Any  
 |   
Any  
 |   
1212  
 |   
RobotStudio.exe  
 |
|   
DataChannel  
 |   
Allow  
 |   
Out  
 |   
TCP/IP  
 |   
Any  
 |   
Any  
 |   
50000  
 |   
RobotStudio.exe  
 |