Question about Microsoft Windows 2000 Professional for PC

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How do I manually open TCP and UDP Ports in Windows 2000

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  • Drakensberg Feb 27, 2008

    Awesome, mate.

    Just what I required.

    Thank you very much for your time, mattozan.

  • Drakensberg Feb 27, 2008

    howzat for being impressed with the solution :)


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Do you mean allowing traffic to certain ports through a firewall?
Windows 2000 has no built-in firewall like Vista and XP do, so the answer would depend on the firewall you are using.

This program will show you which ports on your system are currently in "open" (meaning "in use by a system process and listening or transmitting data":

Posted on Feb 26, 2008

  • Matt Jurach
    Matt Jurach Feb 27, 2008

    You're welcome! Glad that helps. If you could rate my solution, it would help me in return.


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Hi, how to unblock port 15346 in windows 7, I got this msg while trying to open cypercafe pro server icon

  1. Open Windows Firewall by clicking the Start button 4f6cbd09-148c-4dd8-b1f2-48f232a2fd33_47.png, clicking Control Panel, clicking Security, and then clicking Windows Firewall.

  2. Click Allow a program through Windows Firewall. 18abb370-ac1e-4b6b-b663-e028a75bf05b_41.png If you are prompted for an administrator password or confirmation, type the password or provide confirmation.

  3. Click Add port.

  4. In the Name box, type a name that will help you remember what the port is used for.

  5. In the Port number box, type the port number.

  6. Click TCP or UDP, depending on the protocol.

Sep 01, 2011 | Computers & Internet


Windows XP Firewall: How to set an exception

Windows XP comes with its own firewall software, called Windows Firewall. While it's not as customizable as some other firewall programs on the market, there are quite a few things you can adjust in order to balance security with functionality. If you need to allow traffic into your network or onto your computer, you can set up an exception in the Windows Firewall to let a specific program have access, or to let communication occur on a specific port.<br /> <br /> To set up a firewall exception in Windows XP, follow the steps below.<br /> <br /> 1. Open the Control Panel (usually found on the Start menu).<br /> <br /> 2. Double click on the Windows Firewall icon.<br /> <br /> 3. When the Windows Firewall window appears, make sure the firewall is on and the box marked "<i>Don't allow exceptions</i>" is unchecked.<br /> <br /> 4. Go to the Exceptions tab.<br /> <br /> 5. If the software you want to set an exception for appears on the list of programs and services, then all you have to do is put a check next to it and click OK. Otherwise, if you want to create an exception for a program, click Add Program, and for a port, click Add Port.<br /> <br /> 6. For a program, you can either select the program you want from the list that appears, or you can click Browse to find the program on your computer. For a port, enter the name you want to call the exception (which can be just the port number if you want) and then below that type in the TCP or UDP port number. (If it is a UDP port, select UDP below the port number.)<br /> <br /> 7. Click OK to create the exception.<br /> <br /> 8. Click OK again to save the change.

on Dec 07, 2010 | Microsoft Windows XP Professional


Create Exceptions in Windows Vista Firewall

Windows Vista Firewall acts like a fence between your computer and the outer world, but since any fence needs a gate, you have to let some data get in and out by setting exceptions. While some exceptions are set up automatically by Windows Vista, others have to be configured manually Setting a manual exception for a certain program.
  1. Click Start and enter the Control Panel
  2. Here, access the link called "Allow a program through Windows Firewall" (bellow the Security). exceptions1.png
  3. Go to the General Tab, and make sure that the option "On (recommended)" is selected. If not, enable it (this will enable the firewall). exceptions2.png
  4. Go to the Exceptions tab at the top.
  5. To add a program you to your exception list click Add Program (near the bottom). exceptions3.png
  6. A list with the programs on your computer is displayed. Locate the program, highlight it and click OK. exceptions4.png
  7. Be sure that the check box besides your program is checked, then click OK exceptions5.png
Other tips
The most powerful addition to the Vista Firewall is the excellent Rules system. This allows you to enable traffic only in certain conditions, just like opening a gate only for people dressed in white, but they will only be allowed to enter.
  • to specific computers and users
  • to many different protocols (not just TCP and UDP)
  • to both local and remote ports
  • to specific interface types: location area network, remote access, or wireless
  • to specific Vista services
Despite the vulnerability claims, a well configured Vista Firewall is much more capable than all its predecessors, and despite the fact that nothing is perfect, everything starts from you, the user behind the screen.

on May 25, 2008 | Microsoft Windows Vista Home Premium with...

1 Answer

How do i enable ports 25 SMTP and 53 DNS on a Netgear ADSL2

It depends on your router. First you need to login your router.
Then you need to find the port forwarding field. There you tell which ports to forward. In your case its 25 with TCP transport and TCP and UDP for port 53.
For each port you need to tell the router where to send the packages to. So you need to know the IP of the computer you want to get the packages forwarded to.

Some more detailed instruction which depend on the Router version (ADSL2 is not a specific version!) can be found here: or

Mar 14, 2011 | Computers & Internet

1 Answer

My nat type is moderate i need to set it to open.plz

This depends on your router.

I will give you the common fix that works for most:

- In the internet browser, type hit enter
- Hopefully someone knows the login information.
- Find the Client Table (can be under wireless information), attempt to figure out which one is your connection. Should be something like or 109,etc.
- Go to access restrictions (or access/game/app restrictions).
- These ports need to be opened TCP 80 UDP 88 TCP/UDP 53 TCP/UDP 3074
- Once entered correctly, hit save, restart your router and system then you should be good.

Jan 25, 2011 | Computers & Internet

1 Answer

Nat type is strict. how do i change it?

Go into your firewall and forward ports, and do the same in your router. Depending on what it is that your're trying to do. In the firewall permit what you need: ie: filesharing, ect, forward the ports, and then go into your router, and forward those same ports. EXAMPLE: port 50095 ( both tcp/udp ) to port 50095 then do the same in the firewall.

Dec 02, 2009 | Computers & Internet

1 Answer

I have two different domains that are connected via VPN connection through two routers. I can ping from domain to domain via IP address on clients and servers. However I can only do a net view command on...

So you verified ICMP traffic isn't blocked and it appears the servers allow the netBios traffic to pass.

On the client machine, check to make sure the windows print and file sharing is installed and the machine isn't blocking netBios traffic.

Make sure TCP ports 137,139, and 445 are open on the xp machine and any devices in between.

It's acting like the TCP data is being blocked by the client machine.


Sep 28, 2009 | Microsoft Windows XP Professional

1 Answer

Can't connect to ventrilo

Make sure your router has the correct ports open on both your router and that Windows Firewall and/or your personal firewall has allowed access.

Vent needs port 3784 open on both UDP & TCP.

Aug 31, 2009 | Computers & Internet

1 Answer

Tcp port 24000-24100

Hi Sorry to hear you are having problems,
MacOS 10.4 has a firewall built into it ( Of course all MacOS X versions have firewalls ) that can have ports opened on it. You say it was working fine yesterday, did you change anything ?
Fastest and easiest way to open ALL TCP/IP ports is to turn off your FireWall for the time you are playing then re-activate it when you're done.
This can be done in the sharing pane of the System preferences, choose firewall and turn it OFF.
You could of course open just the ports 24000-24100 in the same preference pane...
But chances are it might be something else if you did not modify your system since yesterday.
Are you on the same network as yesterday? Are you able to play on another network ?

Mar 01, 2009 | Apple Mac OS X 10.4 Tiger for Mac

5 Answers

Open ports 24000-24100 on Mac OS X v.10.4.11

System Preferences --> Network --> Sharing --> FireWall --> New --> Port name = Select "Other" and call it (for example) scrabulous --> Add the port numbers 24000-24100 in TCP and UDP .. 

Dec 23, 2007 | Apple Mac OS X 10.4 Tiger for Mac

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