$ GET http://ftp.twaren.net/Linux/Gentoo/distfiles/layout.conf <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> <html><head> <title>403 Forbidden</title> </head><body> <h1>Forbidden</h1> <p>You don't have permission to access /Linux/Gentoo/distfiles/layout.conf on this server.</p> <hr> <address>Microsoft-IIS/6.0 Server at ftp.twaren.net Port 80</address> </body></html> But some random distfiles fetch fine. I suspect it may be doing some type filtering.