More information about the stalled network connection issue that occurs with Vista when behind some firewalls/routers.
This relates to having to use:
*netsh interface tcp set global autotuninglevel=disabled*
to restore proper TCP-IP operation behind some firewalls/routers.
The noteworthy addition to this KB article over what has been previously known:
*NetApp Cache Appliances NC 6.0.2 or an earlier version*
The TCP splicing feature may not work together with the Window Scaling feature in Windows Vista. By default, the TCP splicing feature is enabled on NetApp Cache Appliances NC 6.0.2 or on an earlier version.
*Cisco PIX 6.1(5), Cisco PIX 6.2(3), and Cisco PIX 6.3(1)*
These devices do not support the Window Scaling feature in Windows Vista.
*Cisco IOS Software Release*
Cisco IOS Software Release 12.3(15) and later versions of this software support the Window Scaling feature in Windows Vista.
*Sonicwall*
The Window Scaling feature in Windows Vista may not work if you enable either of the following features on a Sonicwall firewall device: Strict TCP Enforcement Option, Enforce strict TCP compliance with RFC 793 and RFC 1122
*Checkpoint NG R55*
To work around this issue, disable the Sequence Verifier Enforcement feature.