Advice 1: Why you need a firewall, if you have antivirus

Very often users of personal computers are faced with a term such as a firewall, and, unfortunately, do not always understand the difference between firewall and antivirus.
Why you need a firewall, if you have antivirus

Windows Firewall

The Windows firewall introduced in Windows XP SP2 and is used to this day. Some users of personal computers, not noticing the difference between firewall and antivirus (if you have a second), disabled the firewall, thinking it useless. Unfortunately, such people are very deeply mistaken. Simply put, a firewall is a means to detect and alert the user about a problem, and antivirus - tool to find malicious software on your computer and fix it. You still need to understand these concepts in more detail.

Running firewall provides blocking various incoming connections. For example, before the advent of the firewall based on Windows operating systems, the user's computer could be infected by a computer worm in a matter of minutes even under the condition that the personal computer has the antivirus. Yes, the antivirus was able to detect the problem and fix it, but malware still penetrated the system. With the release of Windows XP SP2, users no longer need to search and install a firewall. The operating system firewall may block access to various system resources in the case, if the user connected to the network. In that case, if the user is connected to the home network, it can access any data.

Naturally, the user may install on your computer original Windows firewall, but third-party. Only in this case they will inform the user about the found threat is always, at the time when the original firewall does this in the background, but in the end, the user will still receive as much benefit from the free Windows firewall and third-party.

Summing up

Of course, you need to have the computer as a firewall and antivirus. At the time when the first will alert the user about most of the malicious programs from the outside (from the Internet), the second will be to eliminate them. Therefore, the presence of both programs is essential to ensure an adequate level of security on a personal computer user, but even in this case, an absolute guarantee against intrusion is impossible, because all the time there is a new malicious software.

Advice 2 : How to unblock the firewall

If the program is not responding or the client application does not receive data from the server port the program or service is blocked by the firewall Windows. Using logging will allow you to determine blocked ports and applications, the tool Netsh Helper will help you to customize the configuration of the firewall, and configure group policy settings will fix the problems in implementation of programs.
How to unblock the firewall
Select "Unblock this program" dialog box in the "Warning security system" for the Windows firewall settings through the service window.
Click OK to confirm the selection.
Make further settings for Windows firewall using security center system.
Log in with administrator rights.
Click "start" to enter the main menu and select "Run".
Enter the value wscui.cpl in a command prompt, and press the OK button to confirm.
Select "Windows Firewall" in the window "security Center"Windows.
Go to the Exceptions tab and click the "Add program".
Select the desired program from the list that appears and confirm your selection by pressing the OK button.
If all the above does not help, we recommend that you manually add the application ports to the exceptions list.
Open the utility Netstat.exe. and apply one of the network functions (audio stream).
Guide Netstat-ano > netstat.txt and press the Enter key. This will allow the application to create a file with a list of all pending ports.
Enter the value of the Tasklist > tasklist.txt and press the Enter key.
Enter the value of the Tasklist / svc > tasklist.txt if the program runs as a service. This will allow the app to create a list of services loaded by all processes.
Open the created file Tasklist.txt.
Define the program, and copy its identifier.
Open the file Netstat.txt and copy all minutes and records associated with the intended program.
Click "start" to bring up the main menu and select "Run".
Enter the value wscui.cpl in the open box command line and confirm your selection by pressing the OK button.
Select the Exceptions tab and click Add port.
Specify the port number used by the desired program in the dialog box "Add port".
Specify the Protocol (TCP or UDP).
Enter the port name in string "Name".
Select the scope for the port exception (if necessary). To do this, use the button "Change scope".
Confirm your choice by pressing the OK button.
Make sure that a program runs with changed settings of Windows firewall.
Problems with network applications are not necessarily the result of blocking the app with Windows firewall. Cdbltntkmcndjv such effect is the alert window security center.
Network service map service with the user session. So the warning of the security center does not appear. It is recommended to configure the firewall through the security center.
Useful advice
The easiest way to get rid of the problems with application blocking with firewall is the application firewall that support dynamic filtering.
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