Officially, the incomplete half-open outbound TCP connection attempts allowed at any one time is now unlimited by default in Windows Server 2008 and Vista SP2 (Service Pack 2), and Windows 7. Actually, the ability to limit or restrict number of half-open outgoing TCP connections system can create or establish is built into Windows Vista SP2 and Windows 7, however it’s disabled by default. Thus, in … Continue reading Disable and Remove Half-Open TCP Connections Limit (to Unlimited) in Windows 7 and Vista SP2 with EnableConnectionRateLimiting Registry Key