I am trying to configure Firefox proxy through an ssh terminal (putty) on Ubuntu 8.04. There in no GUI for the terminal, so am using xvfb to simulate the display. However Firefox cannot open any website because the proxy is not set correctly Here's what I tried.Edited a loadcustom.js file in /usr/lib/firefox-3.6x/defaults/prefs and added the lines // tell firefox to load customized config file pref("general.config.obscure_value", 0); pref("general.config.filename", "firefox.cfg"); Then created a firefox.cfg file in /usr/lib/firefox3.6x and added the lines // Lock specific preferences in Firefox so that users cannot edit them lockPref("app.update.enabled", false); lockPref("network.proxy.http", "my-proxy.in-my-domain.com"); lockPref("network.proxy.http_port", 8080); lockPref("network.proxy.type", 1); lockPref("network.proxy.no_proxies_on", "localhost, 127.0.0.1, 192.168.1.0/24"); lockPref("network.proxy.share_proxy_settings", true); lockPref("browser.startup.homepage", "http://www.google.com/"); This did not work for me. Any suggestions?