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Mozilla Firefox Proxy Settings - PC

In order to access web pages external to College, it is necessary to configure your web browser to use the web proxy server. If you use the same computer on different networks, for example in College and at home, then you can setup profiles in Firefox to retain the web proxy settings for each location. Note that once you are no longer a registered member of College that you will need to remove these settings and these instructions are also provided below.

These instructions are appropriate to Firefox version 3.x. If you have an earlier version you can install the latest version of Firefox from the Firefox website. To ensure you have the latest security updates it is recommended you install the latest version.

Note that users of the TCDconnect service should refer to the instructions supplied when registering for that service. The instructions below pertain to computers connected to the College teaching and research network in offices and laboratories.

  1. Launch Firefox
  2. Click Tools - Options. In later versions of Firefox you will need to choose the 'Firefox' menu at the top left and then 'Options' - 'Options'
  3. Click 'Advanced' on the top menu
  4. Choose the 'Network' tab and click on 'Settings...'
  5. Choose 'Automatic proxy configuration URL:'
  6. Type http://www.tcd.ie/proxy.cgi in to the box
  7. Click OK
  8. Click OK once more
  9. Close down Firefox and restart it for the setting to take effect

Firefox Proxy Settings

Using Profiles in Firefox

Many people will use the same computer in multiple locations and need different web proxy settings depending on which network they are connected to. Using profiles in Firefox is convenient way of storing settings such as proxy configurations which are particular to your location when using Firefox. To configure profiles in Firefox:

  1. Click the Start button, choose Run and type firefox -P, as shown below. (On Windows Vista simply click the Start button and type into the Start Search box).

    Windows Run Dialog Box

  2. Click on OK and the Firefox User Profile window will display. 'Default User' is the profile containing the settings you are currently using. You can rename this to your current location, 'Work' for example, so that the choice will be clear when using other profiles. Choose 'Rename Profile' to do so.

    Firefox User Profile Window

  3. When you are ready to specify a subsequent set of web proxy settings choose 'Create Profile'. The Create Profile Wizard Window appears. You can read the information on this screen and then click Next.
  4. You will be asked to specify a name for this profile. We are going to imagine you wish to add a profile for when you are at home and so are not on the College network so we will add a profile called 'Home'. Once you have specified the profile name click Finish.
  5. You will be returned to the profiles list where you will see the new profile listed. To allow you to choose which profile you wish to use each time you launch Firefox you should uncheck the 'Don't ask at startup' box. Click 'Exit' when you are finished adding profiles.

    Firefox Choose User Profile

  6. Each time you launch Firefox you will now be prompted to choose which profile you wish to use.

Removal of College Proxy Settings

  1. Launch Firefox
  2. Click Tools - Options. In later versions of Firefox you will need to choose the 'Firefox' menu at the top left and then 'Options' - 'Options'
  3. Click 'Advanced' on the top menu
  4. Choose the 'Network' tab and then 'Settings...'
  5. Choose 'Direct Connection to the Internet'
  6. Click OK
  7. Click OK once more
  8. Close down Firefox and restart it for the setting to take effect
  9. To stop using Firefox profiles click the Windows Start button, choose Run and type firefox -P. (On Windows Vista simply click the Start button and type into the Start Search box). Check the 'Don't ask at startup' box and choose Exit.

Last updated 22 June 2011 Website Comments and Feedback (Email).