Disconnecting an IP Address

I am trying to make sort of a custom firewall program which will block specified ips.

I currently have a way to obtain the list of the ips that are connected to my computer, but i can't seem to find a way to actually disconnect that ip.

A lot of samples..Here

Code:

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Dim myHost as string = System.Net.Dns.GetHostName()

System.Net.IPHostEntry myIPs = System.Net.Dns.GetHostByName(myHost)



for each myIP as System.Net.IPAddress in myIPs.AddressList



  MessageBox.Show(myIP.ToString());

Next

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Here in this mod i connected a server and disconnect it..

Code:

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Imports System.Net.Sockets

Module Connection

    Dim tcpC As New TcpClient
 
    Public Sub Connect()

            'Connect from this to the server at Port 6970
              Try
                  tcpC.Connect("***.***.**.**", 6970)
              Catch e As Exception
                  Console.WriteLine(e.ToString())
              End Try
    End Sub

    Public Sub Disconnect()
            tcpC.Close()
    End Sub

End Module

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Thanks for the reply but that's not really what I meant.

I want to disconnect that IP from all internet activity on my computer, I found a way to do it in VB6 but it seems that it doesn't work in 2005.

why not.. what way?? post here