Questions tagged [windows-firewall]

Windows Firewall is a basic port filter built into Microsoft Windows, starting with Windows XP SP2.

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Is there a wildcard for Windows-Firewall rule names?

netsh advfirewall firewall show rule name="MyExact Rule Name" Can I somehow show all the rules beginning with "MyExact" for example, with % or * or whatever ?
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53 views

Can't receive UDP data unless Wireshark is running

We have a computer system (Win10) that receives a variety of UDP data from a remote host at various rates (2-50Hz). The remote system is provided by our customer. While we're waiting for the customer ...
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XAMPP Control Panel starting MySQL shows Windows Firewall pop-up

I just installed XAMPP a few weeks ago, and the first time I start up MySQL, I get a Windows Firewall prompt: XAMPP Control Panel Windows Defender Firewall I can't tell what MySQL is trying to do here....
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How to restrict passwordless file sharing in Win10 to only allowed hosts

I need to keep password less sharing enabled but i would like to restrict it to just certain hosts. Is it possible to use the Windows Firewall to block all incoming share connection / protocols unless ...
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336 views

Will all network access operations within the DLLs be blocked If I only block the exe using windows firewall?

Suppose I use Windows firewall block test.exe access the internet (both in and out). test.exe will load a lot of dlls, such dll1.dll, dll2.dll,.... All the dlls have operations which access the ...
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130 views

Allowing a domain name instead of an IP in Windows Firewall

A client of mine retrieves records from a remote MSSQL instance using excel about once a week, for which he is whitelisted on the Windows Server that instance is running on. Every once in a while his ...
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173 views

netsh advfirewall command was not found

I have an advanced rule setup in Windows firewall that I want to be able to turn on and off via an AutoHotkey script. RunWaitOne(command) { shell := ComObjCreate("WScript.Shell") ...
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133 views

#No rights to write in Windows %temp% directory# blocks Firefox downloads, (un)installers, pdf prints, other temp tasks

This is a follow-up on Firefox cannot save files (most of the time), how to solve?, just with a more global problem than just Firefox: I cannot install or uninstall as soon as the %temp folder is ...
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Cannot connect to Windows 10 Pro Remote Desktop through a router

I have an Asus RT-AC5300 router. I have a Windows 10 PC, a Windows 2016 server machine, and an Android phone. Using a remote desktop client on the phone, I can connect to both computers while on the ...
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Can the Windows 10 firewall be configured to block a specific application from accessing the internet, but allow it to access the local intranet?

The background to my question is that there is a pane "Scope" for each outbound rule of the Windows 10 defender firewall in which settings for the local IP address and remote IP address can ...
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134 views

What is the relevant “Core Networking” item in Windows Defender Firewall for DNS over TCP?

In Window 10, the Windows Defender Firewall, the relevant item for standard DNS over UDP is "Core Networking - DNS (UPD-out)" You can enable/disable specific IP addresses in this rule. Some ...
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I have blocked port 80 and 443 on Windows 10 via making a new Firewall rule but I still can browse. How to I block HTTP traffic via firewall?

I have blocked port 80 and 443 on Windows 10 via making a new Firewall rule but I still can browse via Chrome. How do I block HTTP/HTTPS traffic via firewall? This is what I did: Firewall advanced ...
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Why does disabling IPv6 resolve my “domain network vs public network” NIC confusion issue?

I've been deploying a new line of machines and have been domain joining them to our network. After domain joining, waiting a while, rebooting etc, I notice that the computers think they're attached to ...
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Why are there two entries for Remote Desktop in my Windows Defender Firewall listing of allowed apps

I have just started getting an "internal error" when trying to Remote Desktop connect from my PC to a server on the LAN. It's been working fine for several years. I cannot reach our ...
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Configuring Windows to only allow traffic through VPN

I would like to configure Windows 10 to only allow traffic through a VPN connection. For example, Firefox won't have internet access if the VPN is not connected. I want to be able to turn this ...
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Checking all connections on Windows 7

I want to check all outbound/inbound connections when my pc is (apparently) idle and possibly permit/deny selectively each of them as soon as they occur. Unfortunately it seems not possible on Windows ...
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96 views

How to find out which Windows Firewall rule Scope an Ip Address Exists In

I wrote my own IPS/IDS. For each ip address it blocks, it puts it in a Windows firewall rule that references the country code. So, I have ~300k ip addresses across ~185 firewall rule scopes and ended ...
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Wireless hotspot with firewall settings

In a smaller company where I work I would like to create WIFI network that would exclude access to our local network (network printer, network drives etc.) I have one older laptop with Windows 10 that ...
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255 views

netsh advfirewall can not set group profile

Windows Server 2008 R2 Standard, 64 bit. Powershell version 5.1.144049. Trying to use a command from this Microsoft Support Page -> Example 8: Enable specific services netsh advfirewall firewall ...
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3k views

Which IP should I allow in Firewall for AnyDesk?

At my computer I block in Windows Firewall all IP addresses (as described by the link https://superuser.com/a/268909) except those I added as allowed to a Firewall rule. The page https://support....
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64 views

Local Machine Blocked via Windows Firewall Still Has Access to Share

I have a Windows 10 machine on a LAN (the "Server"). This machine has a share that anyone on the LAN can access. I want to prevent one specific machine on the LAN from accessing this share....
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47 views

Why the firewall rules don't work?

I made a firewall rule that blocks access to a site after 3 failed connection attempts, but I still have access to the site on the virtual machine, even if I type the wrong password 3x: New-...
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328 views

OPENVPN server windows 10 NAT and firewall setup

I have problem with ping and File and Printer Sharing.The only way is disable firewall in the server. This is my configuration of the openvpn server: port 1194 proto udp dev tun dev-node VPNserver ...
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1answer
174 views

Windows command line - disable all outgoing traffic

I want to be able to disable all outgoing traffic but not incoming traffic - something like netsh interface set interface "Ethernet" disable but only for outgoing traffic. How do I do that ...
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1answer
68 views

Why isn't Windows Firewall Defender working on my Internet Explorer?

I tried blocking my Internet Explorer's INBOUND and OUTBOUND connection with Windows Firewall Defender: Image of firewall placed on Internet Explorer However I still can use Internet Explorer even ...
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Block Internet access Win10 VM

I have a Windows 10 Hyper-V VM and need to block all Internet access, but only leave access so I can connect via RDP. Right now, I just went into Internet Options and set the Proxy to the loopback IP. ...
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Windows firewall suddenly blocking SMTP connection over VPN

For years, everything has been just fine. I have an always on VPN and have had no problems. Them a few days ago, there was a Windows update. Since then, attempts to send email meet with SMTP ...
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116 views

Windows AdvFirewall Subnet/Port/Program Conflicting Rules

I've googled around, but don't see any answer or any similar questions here. There is some content about how the Windows Advanced Firewall matches rules, but what I don't understand is, what happens ...
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29 views

Firewall is preventing internal communication and I can't get windows to open the firewall

We are having issues with our firewall causing several devices to not be able to communicate. Let me give you a rundown of our setup. We have a server running windows server 2016. It has several VM'...
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1answer
40 views

Windows 7 Firewall: allow everything but block one exe from accessing anything

I would like to configure the Windows 7 firewall with advanced security in a way that nothing is blocked, except for one program that I want to define. So basically, the behaviour would be as if the ...
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43 views

Windows 10: How to configure firewall to use VPN only for some domains? [duplicate]

On my company laptop, I can activate the VPN connexion, but it's slow, and it will redirect all my traffic, including the web browser. I'd like to be able to use the VPN only to SSH into the company'...
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195 views

Windows firewall outgoing rule exception not working

I set custom outbound firewall rule on Windows Server 2019 which deny all outgoing traffic to 192.168.2.0/24. The rule is working for all until I set an exception in "Local principal/Exceptions". When ...
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91 views

Allow remote computer access to SQL Server via SQL Server Management Studio

I have both SQL Server and Windows on version 2016. I am trying to set the firewall to allow SQL Server Management Studio to connect from my PC to it. I have created an entry for port 1433 TCP local ...
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81 views

Block outbound on 80,443 except Windows Updates on Windows Server 2019

I can't believe I didn't find a proper solution for this problem, which I assume to be quite common: We have some Windows Server 2019 machines in the network, which are SQL-Server, frequented by ...
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438 views

Blocking remote internet traffic but allow local computer traffic (localhost) using Windows Firewall

Is it possible for me to block traffic to and from sources and destinations outside my local computer using Windows Firewall for certain programs? As I understand, I may have to use subnets/subnet ...
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1k views

Which windows firewall rule blocks ping/icmp on the ipv6 side?

I have been messing with enabling LAN side ipv6 on my gateway. I was doing some performance testing that began with ipv6-test.com and their side by side ping test of ipv4 and ipv6. I noticed both ...
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Just had 2 firewall path's pop up as letter:number\path\to\exe. Why the weird path?

I just finished upgrading all my hard drives. Lots of data migration. Fired up my first game and was prompted for a firewall rule. Not unexpected as the drive letter the game was on changed, ...
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494 views

How can I solve this DiskID conflict amongst my external disks?

I ran a game I hadn't ran in some time, and it popped up with a firewall rule request. I thought it was odd as I knew one should have already been present. I examined the rule and the path to the ...
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2answers
680 views

How can I create Firewall rules for Universal Windows Platform (UWP) apps?

Let's say I want to create a firewall rule for a Universal Windows Platform (UWP) app (Ex: Microsoft News, Netflix, etc.). How can I do that? (Command prompt / Powershell / Windows Defender Firewall ...
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68 views

Is it safe to only use the Public firewall on a Windows 7 computer with SQL server which has no connectivity to the Internet?

One of our Windows 7 computer with SQL server installed on it only uses the Public firewall because other computers on the network cannot access the SQL server if the private firewall is turned on. Is ...
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830 views

Windows 10 error 0x80080005: cannot update, cannot turn on antivirus, firewall,

It's been a month since I could last update my operating system. I have Windows 10 that came with my laptop HP ZBook 17 G5. I also have HP Client Security, HP Velocity, HP WorkWise, Intel management ...
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4k views

Cannot access Windows 10 share from Ubuntu 18.04

I am trying to set up access to a Windows 10 share from Ubuntu 18.04. I get the following error: Unable to mount location Failed to retrieve share list from server: Connection timed out The error ...
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110 views

Why would explorer.exe be trying to contact a Cloudflare IP address?

I'm running Windows 10 Home build 1903, and recently started monitoring outbound connections (using Malwarebytes Windows Firewall Control). explorer.exe today attempted to connect to 104.24.102.72, ...
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410 views

Can't Remote Desktop to a computer from another network

We have an office network with Windows machines. We use Fortinet's VPN to access the network remotely, and open a remote desktop connection to our local computers. We have this one computer that won't ...
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167 views

How to clear the state of Windows filtering platform?

To troubleshoot firewall I use: netsh wfp show state this generates xml file for all the dropped packets and firewall state. the problem is that this file is 13 MB, and it keeps growing each time I ...
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1answer
1k views

How can I copy some Windows Defender Firewall rules to another PC?

I setup a couple of Outbound Rules in Windows 10 Defender Firewall on one PC. I like to copy these rules to another PC. The rules block a couple of programs from accessing the internet. These programs ...
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99 views

How to block external access to fresh XAMPP installation?

I have installed XAMPP on Windows 10 for the local development and don't want my XAMPP installation to be accessible from the outside. I am reading How to make xampp secure and it says that the ...
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295 views

Correct way to allow connection from Hyper-v guest to an application on host machine

What is the correct way to allow connection from guest to an application running on host machine? Example setup: some application running on my Win 10 host machine, say NodeJS app on port 4400 guest ...
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74 views

Windows 10 firewall block all external traffic and allow local one [duplicate]

This is probably a noob question: I want to block all the outbound external traffic (public internet) but still allow all the internal traffic (from the local net). What I tried is: Allow outbound ...
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1answer
98 views

Turn off Windows Firewall for a single PC in domain?

I have many PC's in domain is there a way to Turn off Windows Firewall remotely for single PC if I'm Domain admin ? Is there a way to do this without GPO ?

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