How to open ports: step by step instruction

How to open ports on routers, many know. But often there are situations when the user does this, but checking from the outside shows that the port is still closed. Some people rest on this problem and do not understand what to do next. One of the most common reasons is the security system of a personal computer. The fact is that after learning how to open ports for a router, a person does only half the job. They also need to be opened in the firewall rules on the computer. Next, I'll explain in detail how to open ports on Windows 10 and lower versions of the operating system.

How to get into the settings of the firewall (firewall)

These settings are located in the Control Panel, where there is a section "System and Security". In newer versions of the operating system, you can use such a desktop element as a search. In it, you must start typing the word "firewall", and the user will see the link in the results. Another very fast and convenient method for getting into the settings is pressing the combination of Win + R. A line appears in which you should write: "firewall.cpl" and click on OK.

How do I open a port on my computer in the firewall?

In the settings of the built-in firewall, you must go to "Advanced settings", after which a section will be opened with parameters in the mode of increased security. On the left there is a field with rules for incoming connections. You need to open it and create a rule. To do this, in the "Actions" window on the right, the corresponding item is clicked and the "Wizard for creating the connection rule" will be opened. The rule type must be selected for the port. Then the protocol type is selected, and the port is specified. As a rule, the protocol selects TCP, and less often - UDP. The port number is also indicated here. How do I know which port to open? Each game and program requires its own specific number. You can find it using the search engine. After this, a tick that allows the connection is put, a name for the rule is created, and that's it. Now the port is open. Check its availability from outside with the help of a special program PFPortChecker. If the check shows that the port is closed, you can resort to this option: allow the program to have any type of network activity. How to open ports in this way? Again you need to get into the settings and create a rule again. But now it is not created for the port, but for the application. In the window that opens, select the program that you want to access. Again, a check mark is used to resolve the connection, a name is created. Now the rule is created for the program.

If this step did not help, how do you open ports? You can try completely to disable the firewall built into the system.

How to disable firewall?

To disable it, you must select the option in the settings under the name "Turn on and off". A window opens with settings for the network types. For each, you need to tick the firewall. After confirmation, it will become inactive, and the operating system on the current computer will become completely open for threats from the external network. Therefore, it is recommended to disable the protection system for a short period of time in order to check the problems associated with port availability, or if you are switching to a third-party packet filter. And constantly working in a network with a disabled firewall is highly undesirable.

How to open ports for the server?

To do this, you need to open the router settings, log in, and then go to the "Firewall" item. Here you select the "Virtual servers" option. It is worth noting that on all routers the names may differ. A window opens where you need to fill in all the fields according to which server is needed. There is nothing difficult here.

How to open a port in Ubuntu?

It's no secret that Windows is oriented even on inexperienced users. That's why in this system all operations are performed using a graphical interface. In Ubuntu, all operations are performed with the help of special commands, which are written on the command line. How can I open ports in this system?

The answer may surprise: no way. The thing is that here no ports are blocked by the default firewall. The user can, on the contrary, block them. If somehow the port was closed, then to check it you can use the Nmap program. It is able to recognize different port states. So, the state of Open means that the application is ready to receive packets on this port. Filtered means that the filter or firewall blocks the port on the network. The program can not determine whether it is open or closed. Closed means that the port is not currently associated with any application, but can be opened at any time. Finally, the Unfiltered state means that the port responds to the utility request, but it is not possible to determine whether it is open or closed.

If you click on the space while scanning, a process of execution will appear.

If the user is not closer to text, but graphic programs, then there is a utility Zenmap, which is a graphical shell for Nmap. She can build a network map.

Results

Thus, in order to open ports on computers, there are many different ways. Some are suitable for some operating systems, others are for others. The user must himself decide on the appropriate means, and the operation itself will not take much effort. In addition, it is useful to get acquainted with the work of computer technology in more detail. Such skills will always be useful.