try to look at these sites, u will find some components to help you

http://www.torry.net/sockets.htm
http://www.vclcomponents.com/search.asp?ID_CATEGORY=182&GRP=1

thx mnasman,those sites i had visited,but i can not find some useful components,
Crux:
"i hope my software can get the software information(program ame ,protocol,portnumber) which want access internet,and permit/prohibit the oftware access internet".

i'm not sure my software run first(before some netsoft) ,some times other netsoft run first,how can i can managed the port which has impropriated by other software.

Hi mnasman,
Please review my question, still have problem.
https://www.experts-exchange.com/jsp/qManageQuestion.jsp?ta=delphi&qid=20187998

Thanks, supwang

thx mnasman,those sites i had visited,but i can not find some useful components,
Crux:
"i hope my software can get the software information(program ame ,protocol,portnumber) which want access internet,and permit/prohibit the oftware access internet".

i'm not sure my software run first(before some netsoft) ,some times other netsoft run first,how can i can managed the port which has impropriated by other software.

thx mnasman,those sites i had visited,but i can not find some useful components,
Crux:
"i hope my software can get the software information(program ame ,protocol,portnumber) which want access internet,and permit/prohibit the oftware access internet".

i'm not sure my software run first(before some netsoft) ,some times other netsoft run first,how can i can managed the port which has impropriated by other software.

thx Gwena,this is a way as you said to pass firewall .and i have a sourcecode about automatic download a exe file from a webpage without any warning. but this not i need:-(

What you need is a port sniffer.
I know of one you can download it comes with a VxD and a DLL, and sample Delphi code. Only trouble is, I can't remember where I saw it....

brb

goto Francois Piette's home page at www.rtfm.be
In the left nav frame, go to Products -> More.
Scroll down in the main (middle) frame, and click
IgnusSniffer.

Scan the downloaded file for viruses, coz once my AV detected a virus.

Enjoy!

Hopefully you've already been helped with this question, but thought you'd appreciate knowing this.  It would be great if you could bring this question to a conclusion, awarding the experts above who helped you with points or a comment to them on your status today.

WindowsUpdate has new updates for .NET users; Details follow - Microsoft .NET Framework
The .NET Framework is a new feature of Windows. Applications built using the .NET Framework are more reliable and secure. You need to install the .NET Framework only if you have software that requires it.

For more information about the .NET Framework, see http://www.microsoft.com/net. (This site is in English.)

System Requirements
The .NET Framework can be installed on the following operating systems:
Windows 98
Windows 98 Second Edition (SE)
Windows Millennium Edition (Windows Me)
Windows NT 4.0® (Workstation or Server) with Service Pack 6.0a
Windows 2000 with the latest service pack installed (Professional, Server, Datacenter Server, or Advanced Server)
Windows XP (Home Edition and Professional)
You must be running Internet Explorer version 5.01 or later for all installations of the .NET Framework.

To install the .NET Framework, your computer must meet or exceed the following software and hardware requirements:

Software requirements for server operating systems:
MDAC 2.6
Hardware requirements:
For computers running only a .NET Framework application, Pentium 90 mHz CPU with 32 MB memory or the minimum CPU and RAM required by the operating system, whichever is higher.
For server operating systems, Pentium 133 mHz CPU with 128 MB memory or the minimum CPU and RAM required by the operating system, whichever is higher.
Recomended software:
MDAC 2.7 is recommended.
Recommended hardware: For computers running only a .NET Framework application, Pentium 90 MHz CPU with 96 MB memory or the minimum CPU and RAM required by the operating system, whichever is higher.
For server operating systems, Pentium 133 MHz CPU with 256 MB memory or the minimum CPU and RAM required by the operating system, whichever is higher.

How to use -> Restart your computer to complete the installation. No other action is required to run .NET Framework applications. If you are developing applications using the .NET Framework, you can use the command-line compilers or you can use a development environment, such as Visual Studio .NET, that supports using the .NET Framework.

How to uninstall
To uninstall the .NET Framework: Click Start, point to Settings, and then click Control Panel (In Windows XP, click Start and then click Control Panel.).
Click Add/Remove Programs.
Click Microsoft .NET Framework (English) v1.0.3705 and then click Change/Remove.
More here  http://www.microsoft.com/net/

The .NET topic is being considered for addition to our All Topics link soon, so this may interest you as well:
https://www.experts-exchange.com/newtopics/Q.20276589.html

EXPERTS POINTS are waiting to be claimed here:  https://www.experts-exchange.com/commspt/Q.20277028.html

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Thank you.  I'm very happy to have helped some and we all appreciate your responsiveness here.  I find that it is helpful to click my Member Profile and view my Question History to keep track of all my open and locked questions.  This helps to not lose track of the questions I've asked.  
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