I'd like to publish a Subversion DAV-like server through an ISA firewall. ISA is intercepting OPTIONS requests and answering them itself as noted in Q304340: http://support.microsoft.com/default.aspx?scid=kb;en-us;304340 The fix presented is to add a registry value PassOPTIONSToPublishedServer to the w3proxy service's parameters key. For security, however, I'd prefer to control this on a per-web-publishing-rule basis. Is that possible? Thanks, Rupert.