DOCUMENT:Q216760 08-MAY-1999 [iis] TITLE :IIS: FTP Users Will Still Be Prompted for Credentials Even From PRODUCT :Internet Information Server PROD/VER:winnt:3.0,4.0,5.0 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Internet Information Server versions 3.0, 4.0, 5.0 ------------------------------------------------------------------------------- SYMPTOMS ======== When users connect to an IIS FTP server from a restricted IP address, they will still be prompted for credentials. For example, you have an FTP site at 192.168.1.1 with IP Address and Domain Restrictions, by default, set to denied access. If a user from a denied IP connects to your FTP server, he will be prompted for credentials. Once the user logs into the server, he will receive an access denied message from the server. CAUSE ===== Once an FTP connection is established, a client/server handshake must take place before anything else can be done. Part of this handshake is obtaining the username and password to be used for the connection. Once the necessary handshake is finished, then the IP restrictions are checked. ====================================================================== Keywords : Technology : kbiisSearch kbiis500 kbiis400 kbiis300 Version : winnt:3.0,4.0,5.0 ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 1999.