How to limit number of connection on spacific port RRS feed

  • Question

  • Hi,

    I installed  an application and it run on port 1935

    on windows server 2008 R2 SP1

    kindly advice how to limit number of connection on this port ?


    Saturday, August 2, 2014 6:43 PM


All replies

  • Hi Ramy,

    As far as I know, we can't limit the number of connection on a specific port by Windows Server itself.

    You may try to use Microsoft Forefront Threat Management Gateway.

    Here is an overview of flood mitigation,

    Overview of flood mitigation


    If you have any question about Forefront TMG, please post your question on the forum below,


    Hope this helps.

    Steven Lee

    TechNet Community Support

    Monday, August 4, 2014 7:08 AM
  • If this is a web application, I recommend server 2012 R2 where you have fine control in IIS 8.5 on limiting concurrent connections per source IP or subnet

    If net, you can edit this reg key:

    [HKEY_LOCAL_MACHINE \System \CurrentControlSet \Services \Tcpip \Parameters]
    TcpNumConnections = 0x00fffffe (Default = 16,777,214)

    This limits the maximum number of connections that TCP may have open simultaneously on the server. This is not per port though.

    You can also edit this key:

    [HKEY_LOCAL_MACHINE \System \CurrentControlSet \Services \Tcpip \Parameters]

    This changes the default range for dynamic ports which is 49152-65535, which makes available 16,384 outbound concurrent connections for each IP Address. Again not port specific.


    • Proposed as answer by Sam Boutros Friday, August 8, 2014 12:44 PM
    Friday, August 8, 2014 12:44 PM