MATLAB: I am unable to access the Network License Manager Dashboard generated from MathWorks Reference Architecture

I am setting a Network License Manager on the Cloud using the Reference Architecture. However, after I successfully deployed the template, I am unable to reach the Dashboard URL automatically generated. Why is it so?

Best Answer

There are few reasons why you could not access the dashboard:

1. The Client IP address (provided in a CIDR format) during the deployment of the template might not cover your actual IP address.

First look for your public IP address by researching "what is my IP" online.

On Azure:

- Access the Resource Group you created

- Go to "Overview" > "netlm-nsg"

- Make sure the "allow-https" Inbound security rule has the right IP range to allow your public IP address to access this server. Use a CIDR calculator if you are not familiar with this notation.

On AWS:

- Locate the EC2 instance running your server (Services > EC2 > Instances)

- Access the Security Group associated to this instance (Either in description or on the right side of the table)

- Go to the inbound tab of the Security Group details

- Make sure the HTTPS rule uses the correct IP range to allow your public IP address to access this server. Use a CIDR calculator if you are not familiar with this notation.

2. The server you created is not running

*On Azure:

-* Access the Resource Group you created

- Go to "Overview" > "netlm-server"

- Verify that the status of this resource group is "Running", otherwise start with the start button

On AWS:

- Locate the EC2 instance running your server (Services > EC2 > Instances)

- Select your instace > Actions > Instance State > Start / Stop

3. Your browser settings does not allow you to access a page using a non trusted security certificate

Depending on your browser configuration or company policy, you might not be able to reach the dashboard because the certificate used by default is not trusted. Some browser would prompt an error message and you will have to accept (e.g. Proceed to netlm-serverazure-xxxxx.cloudapp.azure,com (unsafe)).

If you are unable to bypass this warning, contact your IT administrator.

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MATLAB: How to resolve this error regarding Java and FTP connection when trying to deploy models to the Parrot Minidrone

This issue could be due to a change in firewall settings on your computer which is now blocking FTP. To check if this is the case, connect the drone to your computer (either by Bluetooth or USB). After the LEDs have stabilized to RED and GREEN, run one of the following commands in the MATLAB command window, based on your specific set-up.

Rolling Spider drone is connected to computer through Bluetooth:

>> cd (matlabshared.supportpkg.getSupportPackageRoot)
>> cd toolbox\target\supportpackages\parrot\lib\EDUfirmwareFILES
>> f = ftp('192.168.3.5');
>> mput(f,'SpiderFlight.sh')

Mambo drone is connected to computer through Bluetooth:

>> cd (matlabshared.supportpkg.getSupportPackageRoot)
>> cd toolbox\target\supportpackages\parrot\lib\EDUfirmwareFILES
>> f = ftp('192.168.3.1');
>> mput(f,'MamboFlight.sh')

Either drone is connected to computer through USB:

>> cd (matlabshared.supportpkg.getSupportPackageRoot)
>> cd toolbox\target\supportpackages\parrot\lib\EDUfirmwareFILES
>> f = ftp('192.168.2.1');
>> mput(f,'SpiderFlight.sh') % For Mambo: mput(f,'MamboFlight.sh')

If the 3rd or 4th command throws an error, this issue is likely due to your firewall settings - especially if you have a local firewall running. Most firewalls will block inbound connections for which there is not a specific rule. To work around this issue, an exception will have to be made in the firewall for the interface IP addresses "192.168.3.2" and "192.168.2.2"'. How exactly this exception is made will be dependent on your specific antivirus software. For example, if you are using Windows Firewall, you could add these exceptions with the following steps:

1) Open the control panel. Navigate to "System and Security" > "Windows Firewall" > "Advanced settings". This will open a new window for making changes to the windows firewall settings.

2) Click on "outbound rules" on the left-hand panel.

3) Click on "new rule" on the right-hand panel.

4) In the dialog, choose to create a custom rule. Click next until reaching the "scope" panel, and add the IP addresses. Click next until reaching the "action" panel, and choose to allow the connection. Click next until reaching the "name" panel, and create a name for this rule. Click "Finish".

5) Click on "inbound rules" on the left-hand panel.

6) Repeat steps 3 and 4.

If the command does not throw an error, see this MATLAB answers post for additional workarounds.

Best Answer

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