Open Router Ports Correctly  Step by Step Guide ▷ 2020

Although it is true, many of the connection problems that are obtained when using a certain application on the network, are associated with the router ports. Since, although many are open, many others remain closed for security reasons.

In this sense, in order for any software or application to communicate over the Internet, it will be necessary to open one or more ports to send and receive data.

Therefore, it is necessary to know everything regarding the fact of correctly opening these ports, what they are and the steps to follow to do so.

What are the ports of a router and why do they need to be opened?

Basically, the ports of a router consist of the “Virtual doors” or interfaces used by any computer connected to a network, to facilitate successful data input and output. In this sense, they work as a kind of doors that you can start or close in order to allow the passage of information that is transferred between a network and a computer.

On the other hand, to understand a little the need to open these ports, it is worth explaining that when you connect to the Internet, all the applications you use redirect their traffic through these interfaces and while some, by default, are open; the truth is that most of them are closed by security hot springs.

In this sense, to allow some applications or games that are not common to connect to the network without any problem, it requires opening the ports of a router. Which, in short, will be the same as telling said router that all the traffic that arrives through them is automatically forwarded to the IP of the computer that is requesting the information in question.

What are all the ports on a WiFi router and what is each one for?

Now, it is also important to know which are all the ports of a router and of course, what functions do they fulfill around meeting the needs of Internet users.

But, to begin with, we highlight that There are two types technically, from which a large number of specific WiFi router ports derive.

These are the TCP and UTP ports that we define below:

  • TCP ports: It is the acronym “Transmission Control Protocol” which means “Transmission Control Protocol” and it is a registry that provides considerable flexibility regarding host-to-host connections. As well as data transmission simultaneously in both directions, error checking and security. Which have a main objective that is based on preventing the upper layers or applications from having to perform tasks, thus releasing the system from so much load.
  • UPD ports: These are used by the TCP protocol and are defined as a simple data transmission protocol that does not add verifications and therefore, these must be executed by the same applications. However, even so, it is very fast.

What are all the ports of a WiFi router and what is each one for?

With the above limited, let’s start the listings with each of the existing ports, classified according to their category and indicating to which type of technical port they belong:

Active Worlds


3000 TCP 5670 TCP 7777 TCP 7000 to 7100 TCP

Hotline Server


5500 and 5503 TCP 5499 UDP

Messenger (Microsoft)


1863 TCP 1863 UDP 5190 UDP 6901 TCP 6901 UDP 6891 to 6900 TCP

AIM Talk


4099 TCP 5190 TCP

Delta Three Pc to Phone


12053 TCP 12083 TCP 12080, 12120, 12122 UDP 24150 to 24179 UDP

Calista IP Phone


5190 TCP 3000 UDP

Internet Phone

Dwyco Video Conferencing


1024 to 5000 TCP 6700 to 6702 TCP 6880 TCP 12000 to 16090 UDP



9943 and 56768 UDP

Emule / Edonkey


4661 and 4662 TCP 4665 and 4672 UDP

Laplink Host

Lotus Notes Server



389 TCP 522 TCP 1503 TCP 1720 TCP 1731 TCP 6987 TCP 6988 TCP



6699 TCP 6699 UDP



4500 TCP 59 TCP 1080 TCP 6660 to 6669 TCP 113 TCP

pcANYWERE network host


5631 TCP 5632 UDP 22 UDP



1719, 1720, 20000, 20001 TCP 1719, 1720, 5000, 5100 UDP

NTP (Network Time Protocol)

On the other hand, you can also distinguish the ranges into which all the ports of a router are divided.

Taking into account that there are three in total and are defined as:

  • Well known ports: In general, these are the virtual doors that remain open and are included from 0 to 1023. Thus, they are based on those assigned to operating systems and their services, like common communication protocols (Like, for example, HTTP).
  • Registered ports: They comprise a range between ports 1024 and 49151, they refer to those that are used for applications and games for users and are usually configured automatically during the installation of those applications or games.
  • Private or dynamic ports: These contain ports between 49152 and 65535 and as their name implies, they are dynamically assigned to client applications whenever they need to connect to a specific server. A clear example of this, are P2P clients.

Steps to open the ports of a router correctly easy and fast

It should be noted that, depending on the user interface of each router and the differences between these devices of the same brand, it’s complicated cover all the steps to be taken to open the ports of a WiFi router, in detail. Which is why we won’t be able to show you 100% of the router settings.

However, ignoring some distinctions in the identification of each section in the menus and some other less relevant details, the vast majority of these devices coincide in various aspects. So, below, we detail the most important clues to carry out proper setup In order to open your router ports successfully:

Access the configuration interface of your router

The first thing you have to do is access the configuration interface of your WiFi device and after that, you have to enter the section “Port Forwarding”, “NAT” or “Advanced Options” of the router in question.

Complete the information boxes

Once you access the section indicated above, you will find several boxes that you must fill in depending on the data of the ports you want to open, the protocol you are going to use and also the IP of the device to which the data should be sent.

It is very important to note that the number and type of data may vary and will depend entirely on the router you are about to configure.

Emphasizing that, in general, the most common types of information that are going to fluctuate are:


At this point, you have to indicate the application that is using the port configuration. Which will be extremely useful to identify the use that is being given to the port in question in the future.

In this sense, in certain cases, a list of applications and games will be displayed that preconfigure the rest of the fields correctly, once you select them.

LAN IP address

It orders to which destination device the data that accesses the port that is being used should be redirected. It is important that enter the IP address of said device in which the specific application will be entered.

WAN IP address

At this point, you will have to enter the address from which the information will be redirected and generally, corresponds to the IP address of the router.

Initial WAN Port

Here you will have to specify the number of the port you have to open. Taking into account that, you can only open a port for the application that you are going to use or even, they offer you the possibility of opening a range of ports and in the latter case, you have to indicate the one of that range first.

Final WAN Port

Yes, you are only going to open one port, in this section you have to indicate the same port as the initial one. But, if it is a range of ports, you have to specify the last port of the rangebasically.

Start and End LAN Port

In both points, the same data is used as in WAN configuration.

TCP / UDP protocol

This data must be indicated by the application or services that require the ports to be opened, as well as the port number that you must open. Keeping in mind that, the difference between TCP and UDP is the mode of transmission of information, as we explained in the previous section of the post.

Save router configuration

Finally, when you enter all these data, you will have to proceed to save the new router configuration and as a recommendation, it is very important that you also restart it. After that, you can check if the port has been opened correctly.

How to check if the port was opened successfully?

How to check if the port was opened successfully

Once you carry out the detailed procedure, it is of great help verify or confirm that the configuration was done correctly And for this, you have to perform some steps on your Windows PC or Mac computer.

What you have to do in Windows:

To confirm this action, you have to run a command at the Windows command prompt. Thus, press the keyboard shortcut “Win + X” and select “Command Prompt (administrator)” from the menu that appears.

After completing the above, type the command “netstat – an” and press Enter to be able to execute it. With which, you will see a list in which all the ports to which the equipment has access are listed and of course, it details the protocol that is being used.

So, you just have to find the port you just opened to verify that it is open and also that the configuration is correct with respect to the protocol and the IP address in question.

The steps to follow in MacOS:

For Mac users, this check is much easier. Since, you just have to enter the “Network Utility”, and then press on “Port Scan”. Finally, you must enter your IP address and click on “Explore” in order to verify the correct configuration. That’s it.

If you have any questions, leave them in the comments, we will answer you as soon as possible, and it will surely be of great help to more members of the community. Thank you! 😉

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