Firewall Choices - Graphical

Before attempting any access to the devices in the labs, you should consider the firewall setting. The "firewall wizard" on the main labs page and the login page helps you to determine whether you have any firewall or proxy restrictions that affect the use of graphical-based lab devices. The firewall wizard should recommend to you one of four choices:

  • Tarantella - telnet is actually run from within the lab system, and is therefore unaware of any port restrictions on your corporate network. The session is supported on port 443 through the SSL-encrypted Tarantella system. This should work for almost all corporate firewalls.
    Important Note: If you take two or more reservations using Tarantella back-to-back, it is important to log out of the Tarantella window and close its browser window, in between the two reservations.
  • RDP - a single connection is made to the lab system via a Terminal Services or Remote Desktop Client on port 3389. On the lab system, all applications are offered from an application launcher. The details of running them vary significantly based on both browser and operating system. A few suggestions:
    • IE6 / Windows XP: on the new window that shows the RDP file details (starting with "screen mode id", etc.), go to the IE File menu and choose the Edit with Remote Desktop Connection command.
    • IE7 / Windows XP: on the new window that shows the text of the RDP file details (starting with "screen mode id", etc.), right-click the text, click "Select All", right-click the selected text, and click "Copy". This will put the RDP file contents to your clipboard. Create a new file on your desktop called "gklabs.rdp" or "gklab443.rdp" (depending on the mode chosen), edit this file with notepad and paste the text from the popup window to that file. Double click the file to start the Remote Desktop client.
    • Firefox / Windows XP: Choose "Open with: RDP.file".
    • Pre-XP Windows: cancel download, but run terminal services client, setting host and user manually. The host and username were specified in a dialog that popped up when choosing the firewall mode.
    • Firefox / Unix: choose "Save file" and run the resulting file via the command "tsclient -x filename".
    • If nothing else works: cancel download, but run terminal services client, setting host and user manually. The host and username were specified in a dialog that popped up when choosing the firewall mode.
  • RDP 443 - a single connection is made to the lab system via a Terminal Services or Remote Desktop Client on port 443. See the RDP firewall mode above for other details.