1. This website uses cookies to improve service and provide a tailored user experience. By using this site, you agree to this use. See our Cookie Policy.
    Dismiss Notice

How to crack the TCP connections limit in Windows imposed by Microsoft

Discussion in 'Black Hat SEO' started by R4z0r, Mar 19, 2011.

  1. R4z0r


    Mar 21, 2010
    Likes Received:

    Windows XP SP2 introduced a few new twists to TCP/IP in order to babysit users and "reduce the threat" of worms spreading fast without control. In one such attempt, the devs seem to have limited the number of possible TCP connection attempts per second to 10 (from unlimited in SP1). This argumentative feature can possibly affect server and other programs (see list below) that need to open many outbound connections at the same time.

    The forward thinking of Microsoft developers here is that you can only infect 10 new systems per second via TCP/IP ?!?... If you also consider that each of those infected computers will infect 10 others at the same rate:
    second 1: 1+10 computers
    second 2: 10+10*10 computers (110 new ones)
    second 3: 10+100*10 computers ( 1110 new ones)
    second 4: 10+1000*10 computers (11110 new ones)
    all the way to 10*60 + 10^60 computers in a single minute (that's a number with 60 digits, or it would far exceed Earth's population). Even if we consider that 90% of those computers are unreachable/protected, one would still reach ALL of them within a minute.
    In other words, even though it is not going to stop worm spreading, it's going to delay it a few seconds, limit possible network congestion a bit, and limit the use of your PC to 10 connection attempts per second in the process ! I have no problem with the new default setting limiting outbound connection attempts. Still, users should have the option to easily disable or change this setting. I might be going out on a limb here, but ever since the introduction of Windows XP I can't help thinking that I dislike all the bult-in Windows "wisardry" in a sense that the system also limits user access. That irritating trend to ease the mental load on end users is somewhat insulting, considering that Windows is to make the more "intelligent" choice instead of the end user, as well as limit their access to tuning such settings...
    End of rant.

    With the new implementation, if a network program (e.g. Xrumer) attempts to connect to 100 sites at once, it would only be able to connect to 10 per second, so it would take it 10 seconds to reach all 100 (causing possible software timeouts) . In addition, even though the setting was registry editable in XP SP1, it is now only possible to edit by changing it directly in the system file tcpip.sys.

    You need to patch your Windows if you:
    • Use SEO Software like: Xrumer, Scrapebox, etc.
    • Use Proxy Checker
    • Use P2P Software like: Bittorrent
    • any other Software using more then 10 simultaneous outbound connections
    This guide applies to the follwoing Windows Version:
    • Windows 2000
    • Windows XP SP2 SP3
    • Windows 2003/2008
    • Windows Vista SP1 SP2
    • Windows 7, All 32bit (x86) / 64bit (x64)
    What you need:

    Project Name: TCP-Z (TCP-Z Network Monitor)
    Support OS: Windows XP SP2 SP3/2003/2008/Vista SP1 SP2/Windows 7, All 32bit (x86) / 64bit (x64)

    (Event ID 4226 Patcher, EvID4226 fix, TCP/IP Patch, TCP Half Open Connection Limit Patch.)

    Remove / increase the limit of half-open (incomplete outbound) TCP connections, Release the power of your network, download faster, and more task can be run at the same time.

    You can download the Patch here:


    • TCP-Z (Patch TCPIP in memory - must be enabled each time you start Windows)
    • Univseral Tcpip.sys Patch (I recommend this method - Patch it - restart - done)
    • Driver for TCP-Z (by installing this driver TCP-Z will automaticall change Tcpip.sys in memory)
    Note:You could get a Virus warning on the Driver for TCP-Z as Virus Software assumes its a virus by using the heuristic flag detection method.

    I recommend to set the new TCPIP limit to a minimum of 100 and a maximum of 1024 (X-Rumer)

    Recommendation: Before buying Proxy Lists apply this patch.

    • Thanks Thanks x 1
  2. indianbill007

    indianbill007 Jr. VIP Jr. VIP

    Jan 8, 2010
    Likes Received:
    Making Money when the world is sleeping
    Menlo Park - Next to Zuck
  3. darshan1994

    darshan1994 BANNED BANNED

    Oct 9, 2009
    Likes Received:
    I had to this problem before i managed to get license transfer after installing windows 7. This is great stuff, if I ever decide to go back to xp etc surely gonna use this.

    You avatar just my day. This problem is about microsoft and you have bill gates as avatar :)
    • Thanks Thanks x 1
  4. iknowjack

    iknowjack Power Member

    Jul 25, 2009
    Likes Received:
    Home Page:
    just so there is no confusion
    this doesnt affect windows 7
    this problem existed in 2004. the text/instructions above was also writen in 2004 for windows xp sp2
    Last edited: Mar 19, 2011