Method for removing the TCP/IP half-open connection limit of Vista system

        I believe that everyone has had such an experience. Under the normal ADSL broadband, when you open the download tool to download resources, it will be very difficult to browse the webpage. Windows7 is not spared. The reason is that on the one hand, some download software will take up all the bandwidth in order to pursue speed when downloading, and on the other hand, because Microsoft has limited the number of TCP/IP half-open connections in the system for security reasons. The method of removing the restriction is also very simple: * WIN+R runs regedit * Find HKEY_LOCAL_MacHINE\\SYSTEM\\CurrentControl\\SetServicesTcpipParameters * Find the EnableConnectionRateLimiting key in the right panel At this point, there are three totals: 1. No such key: then Congratulations, your system does not have a TCP/IP connection limit. 2. The key value is 0: Congratulations, your system also has no TCP/IP connection limit. 3. The key value is 1: TCP/IP limit is activated. The default is 11. The removal method is of course very simple: * Double-click to modify its value to "0" * Click OK to exit PS: This method also applies to Vista SP2. As a result, the bandwidth situation should be improved, but The root cause is still solved by limiting the download speed.