Simon Johnson

Asked: 2013-01-25 02:14:20 +0800 CST2013-01-25 02:14:20 +0800 CST 2013-01-25 02:14:20 +0800 CST

IIS Webserver failing to send a FIN/ACK

772

I have a Windows Server 2008 R2 SP1 box with IIS 7.5.7600.16385 installed.

I have HTTP Keep-Alives switched off. Each time a web-request is made the connection is terminated.

I get the following packet trace:

enter image description here

I can see a FIN,ACK going from the client to the server, but none transmitted in the opposite direction.

If I try this from other machines with a supposedly identical configuration the FIN, ACK is transmitted in both directions.

I can't work out what the difference is? Is there any way of configuring this behaviour?

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