Hi Mike, Yes, windows integrated authentication is called NTLM. Clients which do not support NTLM (Firefox out of the box, for instance), will then get a regular dialog box popup for username and password. We only have internal users on our Sharepoint server, and thus they are all a member of the active directory domain. Scott -----Original Message----- From: Mike Withers [mailto:m.withers@xxxxxxxxxx] Sent: Thursday, April 19, 2007 9:59 PM To: Scott Cameron Cc: squid-users@xxxxxxxxxxxxxxx Subject: RE: Squid Not Forwarding Authentication Information To SharePoint Scott I take it to mean that from your description below that you are using windows integrated authentication to your Sharepoint server via the transparent proxy. Are you successfully connecting to your Sharepoint server from outside your company's network? If so what authentication are you using and is it via a proxy? Regards Mike