Opening and closing ports is not difficult. Typically, ports do not need to be opened in the sense that they should open automatically. But when you need to close ports, then in this case you need to think about the security of the operating system. Since potentially dangerous ports can introduce viruses or other malicious software into the system.
Instructions
Step 1
To work with ports, you need to have effective security software installed on your computer. For effective protection, for example, Kaspersky Internet Security antivirus is suitable. When you need a specific port to be open (for example, a system application, game or some program requires it), then you need to add an "exception rule".
Step 2
You can check the security of the ports with a free online check. In order to check for a possible threat to the security of the operating system, you need to follow the link https://2ip.ru/port-scaner, and then wait for the scan to complete. If, after checking, a port is found, opposite which the red LISTEN is written, then it must be written separately in a notepad, since this port is potentially dangerous for the system, and even if it is not being used by malicious software at the moment, it may in the future, therefore it is necessary close immediately upon detection
Step 3
You can close a potentially dangerous port using a utility called Windows Worms Doors Cleaner (you can download it from the link https://2ip.ru/download/wwdc.exe). The application does not require installation, so after downloading you can immediately launch it. Upon opening, a list of ports will be laid out, you will need to close the one (or those) that the scanner's online port showed during the check. The rest of the program settings should not be changed in any way. Then you need to restart your computer. It should be noted that this decision is quick and temporary. More effective protection will be required to keep your computer safe in the future
Step 4
As soon as the malicious port is closed, you need to carefully check everything with an effective antivirus, since there may be consequences from the actions of an open port. If you do not want to buy an antivirus, then you can download the free CureIt and check the entire system. After checking, you need to install a permanent security tool for working on the Internet. The Comodo Internet Security firewall (the program is free) will do.
