Synthetic Classic has reached end of support and is no longer available. Existing Synthetic Classic customers have been upgraded to the all-in-one Dynatrace software intelligence platform.

Configuring Private Last Mile

After the installer completes installation of Private Last Mile, the Preferences dialog box is displayed automatically.

Preferences dialog box

Enter information in the fields, as needed. When you've provided all the required information, click Save. The preferences are saved and the dialog box closes. Private Last Mile is activated on the client machine.

Account Name

Network name you were given for your Private Last Mile test network. Make sure you enter the account name correctly, as this will be used as a key when scheduling Private Last Mile tests.


The Private Last Mile account name is required. If you do not supply an account name, the following error message appears. Click OK to redisplay the Preferences dialog box so you can enter the information.

Account name error message

User Field

User-defined fields. Use these fields to create partitioning conventions that best fit your company's needs.

These fields can be used to create Private Last Mile populations and filter test results in the Synthetic Classic Portal. The following values are recommended for this purpose:

  • User Field 1 – City where the Private Last Mile installation is located

  • User Field 2 – Partner name

  • User Field 3 – Functional role


Email address of the person you will need to contact in the event of any issues or problems with Private Last Mile on this machine.


Country where the machine is located.


United States locations only: Zip code of the location where the machine is located.

Network Connection

The type of Internet connection for the computer:

  • Corporate

  • Broadband – DSL, ISDN, or cable modem

  • Dialup – Connections at less then 56 Kbps

Enable Browser Agent

You can select any or all of the browser agent options.

  • Enable IE Native Browser Agent – If you select this option, a confirmation dialog box notifies you that it could take several minutes to enable this agent.

    To run tests on Internet Explorer 10 or 11, you must configure security settings on the peer machine. For more information, see Private Last Mile requirements for Internet Explorer 10 and 11.

  • Enable Gozilla Native Browser Agent – This is the Firefox-based native browser agent.

  • Enable Chrome Native Browser Agent

If a firewall is enabled, a warning message regarding the firewall appears the first time you run a test.

Launch Private Last Mile window at startup

If you clear this option, the Private Last Mile program launches when the computer is started or restarted, but the user interface does not appear.

Bandwidth test mode

Type of testing Private Last Mile will perform to determine the quality of the bandwidth.

  • Standard – This is the default. Private Last Mile downloads a known object of a known size and determines the length of time it takes to partially download the object before and after each test is run.

    If you use a proxy server, Private Last Mile does not perform a separate bandwidth test. Instead, it determines the quality of the bandwidth by estimating bandwidth values using the objects from within the test.

  • Actual – Private Last Mile uses the objects collected during the test to estimate the quality of the bandwidth.

  • Fixed – Private Last Mile uses fixed values for bandwidth, based on the network connection type you selected.

Kernel Logging and GUI Logging

Sets the logging level for Kernel and GUI logs:

  • INFO

The default setting is INFO. If you select OFF, no log file will be created.

The debug logs are located in <installationdirectory>\logs, where the default for <installationdirectory> is C:\Program Files (x86)\Dynatrace\PrivateLastMile.

Proxy Settings

The default setting, Connect directly to the internet, allows Private Last Mile to connect directly to the internet, bypassing any proxy server.

If you will be using a proxy server, click Proxy Settings to display the Proxy Settings dialog box and select one of the following options:

  • Automatically detect settings – Enter the URL for a proxy auto config (PAC) or Internet Explorer Administration Kit (IEAK) file that contains the configuration settings for your proxy server.

  • Use a proxy server for your LAN – Enter the URL and port number for the proxy server.

Proxy settings dialog box

If you selected to automatically detect settings or use a proxy server for your LAN, and your proxy server requires user authentication, you can also select to Enable proxy authentication. Enter the username and password for the proxy server. Make sure that the username and password you provide are not expired.


If the password is changed for the username you enter here, you must update the password in this configuration.

Memory Settings

The default settings are initial size of 16 MB and maximum size of 64 MB. If you need to change these settings, click Memory Settings, select or enter the desired values in the Java Memory Settings dialog box, and click OK to save the changes.