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Questions tagged [windows-firewall]

"Windows Firewall" refers to the built in client firewall utility that ships with the Windows operating system. (It was previously named the Internet Connection Firewall.) By default, all Windows operating systems since Windows XP and Windows Server 2003 have shipped with this client.

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Windows Firewall Connection Security Rule setup certificate authentication using thumbprint

Unable to setup thumbprint because once I configure to Validation only, client machine getting error. Here are the sample screenshot of my Connection Security Rule setup. Selection Setup enter image ...
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Microsoft Endpoint Manager Firewall rule not working

I am trying to use Microsoft Endpoint Manager to block all traffic to Microsoft Edge for a group. I have done the following: Created a group called Students and added user "Zephyr Prospect" ...
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Ports 80 and 88 still open after closing them on windows server 2019

I have closed ports 80 and 88 on Widows Server 2019 using the firewall (inbound rule), but the ports are still listening. Why those ports are still open and listening after I closed them with firewall?...
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Query User rule blocking packet despite Windows Firewall Exemption

I have created a Windows Firewall exemption via an Inbound Rule allowing UDP traffic through local port 51820 from any remote port. I have validated via the Windows Event Viewer that my simple PING ...
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Can't block outbound traffic on port 80 using Windows 10 firewall

I'm trying to block port 80 using Windows 10's firewall however it seems like no matter what I try I can still access HTTP sites. I've been testing weather the port using the following powershell ...
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UDP Packets Lost (Ubuntu 18.04 into Windows 10)

I am trying to send UDP packets from Linux machine (Ubuntu 18.04 ) to a windows 10 machine. But the packets are not received at the Windows machine. I have already send UDP packets from Windows 10 to ...
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Port accessible and open in local but not open for outside network Windows 11 Port 80 and 443

I am running docker container on windows 11 PC. I am completely lost and spend more than 24 hours in this debugging Expected Result : Mapping subdomain to my hosted project on the docker container I ...
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Windows firewall ipv6 loopback issue

I received it on my windows firewall log: DROP TCP ::1 ::1 53264 47001 I tried to add ipv6 ::1 or any other ipv6 loopback address to the firewall rule but received only the message below: An ...
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Which application path to use for Windows IIS in Advanced Firewall Rules?

I'd like to unblock my IIS ASP.NET 4.5 webservice for public access. In Windows 10 Advanced Firewall Rules I added an inbound rule to accept all incoming requests for my webservice's port (e.g. 8001). ...
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How to block those requests?

One of my website seems to be being under attack. I am getting requests, as shown below, from several IPs addresses. Is there a way to block them?
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Lost RDP session on gcp VM(windows server 2016) afer changing firewall settings

I lost my RDP session after setting up some firewall settings on my GCP windows VM and now that is unreachable via IP or RDP or URL. I tried pinging that IP but request timed out. Can someone please ...
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Capture and convert Windows Defender Firewall log to allow rules

is there a way to capture the Windows firewall traffic (TCP/UDP, Ports, IPs) for some time and then convert them to allowed firewall rules on Windows systems? It would make sense in my opinion to ...
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Allowing only one server to access SQL via Windows firewall not working

I'm trying to configure my Win server firewall to only allow connections to SQL from our app server. I've even changed the port to a non-deafult. It works fine so that the app server can access it, ...
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Windows Firewall , rules that override other rules

I'm trying to figure out how I can create a rule that will override when conditions met an existing rule. IE: I create a rule that blocks port 80 & 443 then I'd like to create a rule that opens ...
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How to run Windows Ikev2 with NonetworkFirewall?

I have a small problem.I setup Firewall App Blocker in whtielist Mode(means basically It cut all Internet except allowed apps by setting "block all connection that not match firewall rule" ...
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nftables - redirect port internally

i'm moving from windows to debian 10, and on windows i'm using portproxy to re-route a port netsh interface portproxy add v4tov4 listenport=9800 listenaddress=127.0.0.1 connectport=9078 ...
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Send remote commands with Powershell - Can't find the right port to open

I'm trying to setup my domain computers to be able to receive PS commands from the DC. I'm beginning with a very simple command (Restart-Computer) to test things, however the Windows Firewall insists ...
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Unable to change description for the `RemoteDesktop-UserMode-In-TCP` firewall rule via powershell

I'm trying to change RDP port for my Windows Server 2019 Core. I've edited the registry successfully and was able to update the port in firewall rules so that everything works: PS C:\Windows\system32&...
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Domain admin profile stuck on login to server

Thank you in advance for reading this, I appreciate it. I recently built a new AD for the company I work for. Everything was going good. All of a sudden my profile is getting stuck on welcome screen. ...
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WinRM throws Error Code 2, "Unable to check the status of the Firewall" despite EVERYTHING

I am trying to set up a source initiated event Subscription from a Windows 2019 server to a Windows 10 Client. I know that might sound backwards but I don't really have a choice for a variety of ...
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Appending to firewall rules remotely

I have one server (Windows Server 2019) that is hosted remotely. I block RDP, SQL and FTP access via IP address whitelisting. The problem is my home IP address constantly changes. My hosting provider ...
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Allow domain user to turn off Windows Defender Firewall

I need to grant all Windows Domain Users (so without elevated privileges) the ability to turn on or off the Windows Defender Firewall and to create exceptions as well. As far as I remember, I achieved ...
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How do you configure Windows firewall for selective web browsing?

I'm configuring administrative hosts in a management subnet. I've installed Chromium to enable our technology staff to be able to browse to our internal web management interfaces for administrative ...
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I've been locked out of EC2 RDP connection to my Windows 2019 Server instance after resetting firewall rules

I've been using a Windows_Server-2019-English-Full-Base-2020.12.09 EC2 instance in N.Virginia for a while and accidently got my firewall rules reset and it seems RDP port is closed and not accepting ...
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Windows Server 2016 spontaneously not accepting connections

I have a production server that was working nominally until 4pm yesterday, 12/16/2020. After that time it started to reject incoming TCP connections, and connections trying to connect through ...
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Unable to access ports on Azure VM

I created a Windows VM on Azure, I was able to access it via RDP. I hosted a site on IIS and linked it to a port(8010), accessed it through localhost:8010. Then I made an Inbound filter rule on the ...
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MMC > Certificates > Other computers: Which firewall ports used for this?

I am having a windows firewall issue when trying to access the Certificate Store from another computer on the same domain using MMC or PowerShell. I am logged in as a domain admin. Both servers are ...
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Windows 10 Firewall Blocking Incoming VPN Traffic

Client accesses Windows Server file share and is successful.. [Local IP] 192.168.1.62 [VPN IP] 192.168.15.101 ---> [Server IP] 192.168.15.10 Success Server ...
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Is there a text-based Windows Firewall Configuration?

In Linux, you can use iptables to store/load your iptables based firewall configuration, but in Windows it appears to me that it's all GUI based, which means you can't store / track the changes you've ...
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How to disable / remove multicast completely?

On one of my Windows Servers (Windows Server Standard 2019), I'd like to remove multicast handling completely. Completely really means completely - completely ignore incoming multicast traffic, and ...
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Cannot send data from Linux VM to Windows Host

I am trying to send data packets using SOME/IP Common API from my Linux VM. However, the data is not reaching to the Windows Host application. I have tried dumping the data packets using tcpdump, what ...
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how to restrict inbound connection to mysql server to specified IP address by firewall setting

background purpose: I want to restrict inbound connection to MYSQL server only for specific host by setting inbound rules of windows firewall. I mean, I want to allow only specific host to connect to ...
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Windows 2019 server - Port closed even though it's added to firewall

I just got myself a Windows 2019 server VPS. It's unmanaged. I'm trying to open port 3307. I added the port to the firewall under ingoing tcp/udp and outgoing tcp/udp (see screenshots below). I'm ...
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How to use GPO to update an existing firewall rule?

I used the guidance found here to add a set of firewall rules to my GPO. I performed these steps: Exported all rules from my DC Imported them into my GPO Deleted the ones I didn't want Applied the ...
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Proper way to configure Windows 10 firewall for multiple users

We are deploying a Windows 10 LTSC image to multiple devices. The image configures one admin user and a second non-admin user. The non-admin user is the primary account for day-to-day use of the ...
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4 votes
2 answers
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Windows Firewall misbehaving

I'm trying to implement Windows firewalls on our servers, and I've come across an oddity that I could do with some advice on: So I have a service listening on ports 8099-8102TCP, and a matching ...
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5 votes
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Hardening a file-serving Windows Server 2019 instance

I'm in the process of re-configuring and securing a server for the small company that I work for. We use it to store design files and other data with Autodesk Vault. It's running on a VPS from a ...
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Windows Server 2019 IP Group for Firewall

I have a couple of Windows Server 2016 and 2019 boxes and wish to add some simple rules to the Windows Defender Firewall (e.g. RDP Port, FTP Ports, etc.), allowing a group of IP addresses. I'd prefer ...
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Why Windows 10 Blocks some LAN IPs (192.168..)?

- Summarize the problem: Windows 10 does not allow visiting my local LAN IPs (192.168.1.0/24), and some domains (that are defined in my hosts file). Error shows in all browsers (e.g. form chrome: ...
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Allow computers in office to ping Windows VPN clients

We are using OpenVPN to allow employees to connect to the office network. The office uses 172.20.1.0/24, the VPN clients use 10.8.0.0/24. Our VPN server is a QNAP NAS. When connected, clients can ...
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Not able to ping the host machine (or any other machine on the network) from the linux docker container

I am using Docker Desktop Version 2.0.0.3 (31259) on my windows server 2016 machine. From the host machine(say A), I can ping to any other machine in the network(say B), but when I run a linux ...
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new azure port will not open

Some time back I created an Azure VM and needed to open some ports. I did so by creating a security group and added the appropriate inbound rules to open the ports. Also I created an inbound rule in ...
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1 vote
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WS2016 Firewall: Still blocking program from sending packets after creating in/outbound rules for said application

Starting config: Firewall has been set to block both in/outbound traffic by default. Minimal Core Networking rules have been enabled for NIC to get auto configured. Every other rule is disabled. So ...
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1 vote
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What are differnet between local port and remote port of firewall in Windows 2016 server?

I use MS SQL 2017 Express Database server in my Windows 2016 server. I hope to expose MS SQL 2017 Express Database server to the internet, so I need open 1433 port in firewall. But I find there are ...
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Server 2019 - restrict port 3389

There seem to be plenty of explanations on how to restrict port 3389 to certain IP addresses - open Firewall and the 3389 rule. Add required IP addresses to Remote IP addresses under the scope tab and ...
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Virtual network between Hyper-V host and guest VM is blocked by firewall because marked as unidentified

I have the following setup: Windows machine with Hyper-V activated Hyper-V VM under CentOS 7 using the default virtual switch as an interface between host and guest The virtual switch has 172.24.255....
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Windows Server 2016 - How to change TCP Timeout settings on open port [closed]

In Windows Server 2016: I ran a NodeJS application on port 8080 and made the port available to the public internet. (by allowing inbound TCP connections over the port 8080 in the firewall) GET ...
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2 votes
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Windows Firewall: allow only certain DNS servers

In my organization (which uses two network DNS servers and a local DNS resolver per laptop) I want to restrict DNS requests to only 127.0.0.1 192.168.10.201 192.168.20.2 1.1.1.1 1.0.0.1 and block ...
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How re-enable Windows Firewall when the service has been stopped and disabled without cutting yourself out?

As every Windows system administrator should know in 2019, the "Windows Firewall" service is a critical component of the Windows network stack, and it should never, ever be stopped end disabled; the ...
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Create Azure VM with Windows Firewall ports open?

I'm working on a Powershell script that will automate setting up an Azure VM, adding it to my Active Directory domain, and setting up a number of other settings. The idea is to be able to spin up and ...
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