How to tell which windows firewall rule is blocking traffic - how to tell which windows firewall rul.Best practices for configuring Windows Defender Firewall
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- How to tell which windows firewall rule is blocking traffic - how to tell which windows firewall rul
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.
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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. Once it is determined, you may then use that information to open a specific port.
Before we begin to check which ports are being blocked and which ones are listening, let us discuss what listening means for a computer. By definition, a listening port is a networking port on which a process or an application listens. By listening, it means receiving information through packets. A listening port does not mean that it is being allowed by the firewall. A listening port simply means that it is receiving some sort of traffic. However, that traffic can still be blocked by the firewall.
Before checking for blocked ports , let us find out which ports your Windows device is listening to. This is because it could be possible that your application is not receiving any packets since the port that you think is being blocked by the Firewall is not listening at all. To check for the listening ports on a Windows machine, launch the Command Prompt and then type in the following command:.
The ports that have their State listed as Listening are the ones listening to the network traffic. You can scroll down the list and look for the port you are interested in.
Alternatively, you can also use the command below to look for a specific network port and check if it is listening or not. Replace PortNumber with the number of the port you are interested in.
If you find any listings below the command, it means that the port you specified is listening. If the space is empty, it means that it could not find the port you mentioned, or if it did find it, it was not in the listening state.
One way to check for any blocked ports is through the Windows Firewall logs. Logs are an important factor in determining the behavior of the Firewall. However, logging in for the dropped packets, which are the packets blocked by the Firewall, is disabled by default in Windows. These need to be active and then you can check the generated logs for the ports blocked.
Note that only those packets will be dropped if the port is listening, which can be checked using the method discussed earlier in the article. To generate logs for the dropped packets, you must first determine the network profile you are currently on. In the Properties page, you will see whether the selected profile is Public, Private, or Domain. Now that you know your working network profile, you must now enable logging in for the dropped packets.
To do so, open Windows Firewall in the Control Panel by typing in firewall. From there, click on Advanced Settings on the left. In the Properties pop-up, switch to the profile tab that you noticed earlier from the Settings app, and then click Customize under Logging. Close the Properties window as well by clicking OK. Now, navigate to the following location using File Explorer to check out the generated logs for the blocked ports.
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