Consider the following scenario:
Note The supported fix for Forefront TMG 2010 is included in Forefront TMG 2010 Service Pack 1 (SP1).
- You enable HTTP compression in Microsoft Internet Security and Acceleration (ISA) Server 2006 or in Microsoft Forefront Threat Management Gateway (TMG) 2010.
- On a client, you use ISA Server 2006 or Forefront TMG 2010 as a Web proxy to connect to a Web server. However, the Web server takes a long time to respond to HTTP requests from the client.
Note When the Web server sends data to ISA Server 2006 or to Forefront TMG 2010, ISA Server 2006 or Forefront TMG 2010 accumulates data. ISA Server 2006 or Forefront TMG 2010 does not send any data to the client until the Web server finishes the HTTP request. - You close the Web browser before the Web server is finished responding.
- The client sends a TCP reset response to ISA Server 2006 or to Forefront TMG 2010 on a TCP session that was opened.
- You try to access the Web site again, and the client or an intermediate proxy server uses the same source port from the previous TCP session that just obtains the TCP reset response.
Note The supported fix for Forefront TMG 2010 is included in Forefront TMG 2010 Service Pack 1 (SP1).