Half-open limit fix (patch) for Windows - Home
http://half-open.com/home_en.htm

Mejora la conexion de los torrents aumentando los canales de comunicacion del sistema en windows, normalmente limitados para evitar el spam de los spyware, el aumento de dichos canales mejora las posibilidades de conexion de un torrent.

Tcpdump is the premier network analysis tool for information security professionals. Having a solid grasp of this über-powerful application is mandatory for anyone desiring a thorough understanding of TCP/IP. Many prefer to use higher level analysis tools such as Wireshark, but I believe this to usually be a mistake. In a discipline so dependent on a true understanding of concepts vs. rote learning, it's important to stay fluent in the underlying mechanics of the TCP/IP suite. A thorough grasp of these protocols allows one to troubleshoot at a level far beyond the average analyst, but mastery of the protocols is only possible through continued exposure to them. ... for this reason I strongly advocate using tcpdump instead of other tools whenever possible.