A. To configure LAN Proxy settings in Internet Explorer 5.0 perform the following:

  1. Start Internet Explorer
  2. From the Tools mention select 'Internet Options'
  3. Select the 'Connections' tab
  4. Click the 'LAN Settings' button
  5. By default the 'Automatically detect settings' option will be selected. You can also configure the location of a configuration script.
  6. To manually configure check the 'Use a proxy server' and enter the DNS or IP address of the server and the port it uses.
  7. Click OK
  8. Click OK to the main dialog

If you select 'Automatically detect settings' essentially, the discovery cycle will typically involve one dhcp request or dns request. Further, a discovery cycle happens quite infrequently.

When you install IE5, the first time it runs, it will perform a discovery cycle only if you are on a LAN and not a dialup connection. (discovery is disabled by default for dialup)

If this initial discovery fails, then auto discovery is disabled until a user re-enables it. If the discovery succeeds, then discovery is only performed when the downloaded configuration file expires according to HTTP semantics. If no expiry
information is supplied, then the default is discovery once every 7 days. Again, this is only if it initially succeeds.

The following registry entries can be directly updated instead:

  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable - Set to 1
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyServer - Set to <proxy server>:port, e.g. proxy:80
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyOverride - When not to use the proxy server. For local set to "<local>" (don't type the quotes but do type the < and >)