How to tell which windows firewall rule is blocking traffic.Subscribe to RSS

Looking for:

How to tell which windows firewall rule is blocking traffic 

Click here to ENTER

Other applicable firewalls such as the firewall on a router can also be disabled for troubleshooting purposes. For information about enabling and disabling the Windows Firewall, see Turn Windows Firewall on or off. Retest the application after disabling any applicable firewalls. If the program now works successfully, then the firewall was blocking the traffic.

There are a few possible causes of blocked traffic. If the application still fails after the firewall is disabled, then the firewall is not causing the application failure.

Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Table of contents Exit focus mode. Any ports not displayed simply means that they are being blocked by the Firewall, or are not listening. Run the Command Prompt with administrative privileges and then type in the following cmdlet:.

Although netsh firewall has been deprecated, it still works to give out the required information. The open ports will be given in the highlighted area. From here you can determine whether the port you are looking for is open or not. If you find that the port is being blocked by the Windows Firewall, you can allow it by using the steps given below. You have now successfully unblocked the port you needed. You can repeat the steps to allow additional ports or delete this one by navigating to the Inbound rules and removing the respective rules.

Having your Windows Firewall enabled all the time is important if you are connected directly to the internet. Firewall protects your system and your entire network from outside threats.

However, users that have a dedicated Firewall in place often tend to disable their Windows Firewall for free-flowing packets. This way they do not need to allow each port through the Firewall individually. However, this is only recommended for devices that are either not connected to the internet and are only accessible on the Local Area Network LAN , or devices that are secured through dedicated Firewalls.

Subhan holds a degree in Electrical Engineering and has completed several systems and network certifications including Huwaei, Cisco and Microsoft certs.

He mostly researches and writes about the Windows world. Table of contents What does listening on port mean Check listening ports Check if Windows Firewall is blocking ports Check for blocked ports using Firewall logs Check for blocked ports using Command Prompt How to open a closed port Closing words. Facebook Twitter. Previous Previous.

Next Continue. Type control and press Enter to open Control Panel. Switch to your preferred profile here is Domain Profile in this example and then click Customize in the Logging section. Open the dropdown menu for Log dropped packets and select Yes. Open File Explorer and then go to that path. Open the log file which is named as log. Then, you can check for the blocked ports in the log file.

Then, how to see if your Firewall is blocking a program? We will introduce one method in the next part. Do you need to permanently disable Windows Defender Antivirus on Windows 10? In this post, we will show there ways to do this job.

   

 

How to tell which windows firewall rule is blocking traffic

  Table of contents What does listening on port mean Check listening ports Check if Windows Firewall is blocking ports Check for blocked ports using Firewall logs Check for blocked ports using Command Prompt How to open a closed port Closing words. We will introduce one method in the next part. Featured on Meta. You can repeat the steps to allow additional ports or delete this one by navigating to the Inbound rules and removing the respective rules. For information about enabling and disabling the Windows Firewall, see Turn Windows Firewall on or off.  

- F-Secure User Guides

 

Super User is a question and answer site for computer enthusiasts and power users. It only takes a minute to sign up. Connect and share knowledge within a single location that is structured and easy to search. I'm trying to set up a computer to accept all incoming traffic but only allow outgoing traffic to a specific IP.

I have set an allow all rule for Incoming and an Allow rule that specifies an IP address as the only acceptable Outgoing address. I have also set up a deny all Outgoing rule, assuming that the other rule will take precedence.

The problem I am having is that all traffic is being blocked, even the traffic going to the IP that I specified as being allowed. I am looking for a way to trace traffic through the firewall and see exactly what rule is blocking the traffic. The log generated by the firewall monitoring tells me that traffic was dropped but not which rule blocked it. Note: depending on your Windows language setting, the auditing service might use different non-English names. I got a rule-ignored case too, the rule was added with Windows Firewall.

Just restarting the Windows helped. But this didn't work on other Windows setup same version. This seems to be because the Allow subject somehow becomes a subject of: a Rule added for Windows Services Hardening, which has higher priority.

Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Start collaborating and sharing organizational knowledge. Create a free Team Why Teams? Learn more. How to tell which windows firewall rule is blocking traffic Ask Question. Asked 5 years, 8 months ago. Modified 9 months ago. Viewed 32k times. Improve this question. Josh Josh 1 1 gold badge 4 4 silver badges 5 5 bronze badges.

I've often wanted to do this too, but it seems that the built-in Windows firewall doesn't have much to offer in this regard. I'd be interested to know if you find a solution for getting more detailed logging. The network should have its own firewall to protect it. Add a comment. Sorted by: Reset to default. Highest score default Date modified newest first Date created oldest first. Improve this answer.

Bob Bob 9 9 silver badges 12 12 bronze badges. This will get you nowhere if you have outbound filtering enabled in Windows Firewall, because then, all programs without an explicit allow rule will be by default blocked.

So, your program might not be blocked by a firewall rule at all. This worked with Windows Server R2. In my case DisplayData-name says Default Outbound , so at least I'm sure my allow rule is ignored, so it's a bug is Microsoft firewall. This worked with Windows Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog.

Episode Kidnapping an NFT. Featured on Meta. Announcing the arrival of Valued Associate Dalmarus. Improvements to site status and incident communication. Linked 4. Related 0.

Hot Network Questions. Question feed. Accept all cookies Customize settings.