Windows Half-open limit fix (patch)

Is it safe?
Half-open limit fix creates backup copy of edited tcpip.sys file, and you at any moment can restore the original file, pressing of one button. I have tried to make the program as much as possible safe. In any case, use the given program at own risk.

What is the optimal value of concurrent half-open outbound connections limit?
I consider, that optimal value is equal 100. The further increasing the limit will have effect, only if You use simultaneously several P2P programs (µTorrent, BitComet, eMule, P2P TV etc.) or hold a server on a computer.

Does the limit cut down my internet speed?
To check up, whether works on your computer this limit, look in Event Viewer (for example via Control Panel — Administrative Tools; or Start — Run — EventVwr.msc). Each message «EventID 4226: TCP/IP has reached the security limit imposed on the number of concurrent TCP connect attempts» speaks about that limit has worked. Usually it means, that the network worm (virus) or any P2P program works on your computer. If such messages in Event Viewer appear very often most likely you sweep up a problem and - you will have difficulties with opening web pages in a browser.