How to block programs in firewall

Firewalls are an essential component of any robust cybersecurity strategy, and they serve as the first line of defense against hackers and malware. While firewalls provide a host of security benefits, sometimes you need to take additional steps to protect your system from potential threats. In this blog post, we will explore how to block programs in firewall effectively. Whether you want to prevent specific applications from accessing the internet or simply avoid risky online behavior, we have got you covered with practical tips and tricks that can help keep your computer safe and secure. So let’s dive in!

Different types of firewalls

Firewalls are an essential aspect of cybersecurity, and they help to secure networks from unauthorized access. Different types of firewalls exist, each with its unique features and capabilities.

Packet-filtering firewalls evaluate the header information of network packets as they travel between networks or computers. These firewalls allow or deny access based on pre-defined rules that match specific characteristics such as source IP address, destination IP address, and port number.

Stateful inspection firewall is a more advanced type of packet filtering firewall. This kind of firewall evaluates not only the header information but also looks at the entire data packet’s contents before deciding whether to block it or allow it through.

Application-level gateway (ALG) operates at layer 7 in the OSI model and provides protection by examining incoming traffic for specific applications such as HTTP, FTP, SMTP among others.

Next-generation Firewalls (NGFWs) combine traditional firewall functions like packet inspection with additional features such as intrusion detection/prevention systems (IDS/IPS), application control platforms (ACP), and user identity management services.

Understanding different types of firewalls can help you make informed decisions on what kind best suits your organization’s needs while providing effective security against cyber threats.

How to block programs in firewall

Blocking programs in a firewall can be an effective way to protect your computer from malicious software. To do this, you’ll need to access the Windows Firewall settings on your computer.

First, go to the Control Panel and select “System and Security.” From there, click on “Windows Defender Firewall” and then choose “Advanced Settings.”

Once you’re in the advanced settings menu, look for the option that says “Outbound Rules” and click on it. Then, select “New Rule” from the right-hand side of the screen.

In the new rule wizard window that appears, choose “Program” as the type of rule you want to create. Next, select whether you want to block or allow connections for this program.

After selecting blocking as your choice preference,I recommend choosing one or more programs which are identified with malware behavior so that they won’t get through once they try connecting online.

Finally,give a name & description for this new outbound rule you’ve created before clicking finish button when done setting up your rules.

Following these steps will help ensure only trusted programs have access while keeping out unwanted ones at bay through proper firewall configuration practice

Tips and Tricks

When it comes to blocking programs in a firewall, there are some tips and tricks that can help you make the most of this security feature. Here are some suggestions:

1. Use a whitelist approach: Instead of trying to block every program that could potentially be harmful, consider creating a list of approved programs that are allowed through the firewall. This way, you minimize the risk of accidentally blocking something important.

2. Keep your lists up-to-date: Regularly review both your whitelist and blacklist (if you have one) to ensure they’re accurate and reflect changes in your system or network.

3. Consider using third-party tools: Some firewalls come with built-in features for blocking specific types of traffic or applications, but if yours doesn’t, there may be third-party tools available that can help.

4. Be aware of false positives/negatives: Firewalls aren’t perfect and sometimes they may mistakenly block an innocent program or allow a malicious one through. Stay vigilant and monitor your system for any signs of suspicious activity.

5. Test before implementing changes: Before making any significant changes to your firewall settings, test them in a controlled environment first to avoid accidental disruptions or downtime.

These tips can help improve the effectiveness and efficiency of your firewall’s program-blocking capabilities while minimizing risks associated with false positives/negatives or outdated lists.


Learning how to block programs in firewall is an essential skill for any computer user. It helps you protect your system from malware and other potential security threats. With the steps outlined in this article, you can easily configure your firewall settings to block unwanted programs.

Remember that firewalls are not foolproof and should be used in conjunction with other security measures such as antivirus software and safe browsing practices. By taking a proactive approach to cybersecurity, you can keep your personal information secure while enjoying all the benefits of technology.

We hope this guide has been helpful in showing you how to block programs in firewall on Windows operating systems. If you have any questions or comments about this topic, please feel free to share them below!

Melina Richardson
Melina Richardson is a Cyber Security Enthusiast, Security Blogger, Technical Editor, Certified Ethical Hacker, Author at Cybers Guards. Previously, he worked as a security news reporter.