A Web browser client is located behind a server that is running Microsoft Internet Security and Acceleration (ISA) Server or Microsoft Forefront Threat Management Gateway, Medium Business Edition. When this client tries to download a file from an external Web site, ISA Server or Microsoft Forefront Threat Management Gateway, Medium Business Edition prevents the file from being downloaded. Additionally, the Firewall service returns following error code. This error code appears as a result code in the ISA Server or Microsoft Forefront Threat Management Gateway, Medium Business Edition log:Note This error code represents the following error description:A network trace of the problem may resemble the following:
| Frame(s) | Direction | Comments |
|---|---|---|
| 1 | ISA <-> Svr | TCP handshake |
| 2 | ISA <-> Svr | Http: Request, GET test.php |
| 3 | Svr -> ISA | TCP_ACK to frame #2 |
| 4 | Svr -> ISA | Http: Response, HTTP/1.1, Status Code = 200 ProtocolVersion: HTTP/1.1 StatusCode: 200, Ok Reason: OK Server: Microsoft-IIS/5.0 Date: Date Time Connection: close XPoweredBy: PHP/4.3.10 ContentType: application/octetstream ContentLength: Content-Disposition: attachment; filename="FileName" HeaderEnd: CRLF |
| 5 | ISA -> Svr | TCP_FIN_ACK |
| 6 | Svr -> ISA | Http: HTTP Payload (attachment referenced in frame 4 content-disposition header) |
| 7 | ISA -> Svr | TCP_RST |