"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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Allow Application in Windows 7 Firewall on per-NIC basis

I want to allow an application on a Windows 7 Professional System to only be accessible through the OpenVPN TAP adapter by configuring the Windows Firewall accordingly. Unfortunately I cannot find an ...
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42 views

Copy a Windows Server Firewall address list from one rule to another using Powershell

I'm a little stuck on the documentation for the Firewall cmdlets in Windows server. I am trying to copy the address lists for the remote and local ips from one rule to another. I can get the list ...
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16 views

Windows Firewall causing connection throttling

I have an application running on Win8.1 (or WinServer2012, it makes no difference) that provides two HTTP server listeners in separate processes (one using HTTP.SYS via .NET HttpListener, the other ...
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20 views

Cannot connect to anything above port 6000

I have an instance of Windows Server 2012 R2 running on Amazon Web Services. I am not able to make a TCP connection to the server on any port higher than 6000 for some reason. All ports below 6000 ...
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13 views

Windows firewall log not rolling over

I have Windows 2012R2 and I have the firewall set to log successful and dropped connections (some machines set locally, some via GPO). Regardless of how its set, I notice that when the log reached the ...
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18 views

Determining what windows firewall rule is allowing traffic through

How can I determine what windows firewall rule is letting traffic through for a particular service? Windows firewall log does not indicate what firewall rule is being applied.
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20 views

“The session has been cancelled” in Windows Firewall IPSEC

I have a bit of a head scratcher. For some reason a couple of my 2012r2 boxes aren't able to establish Quick Mode connections. Main mode is established just fine. This only happens after the ...
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1answer
171 views

Windows Firewall - Management of hundreds of servers

At the moment we are managing Windows Firewall on servers manually, on a one-on-one basis. This works but is cumbersome, for example if a change is needed for a new agent or something it's painful to ...
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2answers
120 views

Allow FTP passthrough on Windows server 2012

I can find many resources on how to configure a Windows server as an FTP server, but for this situation I have not figured it out. I'd like to configure a Windows server 2012 firewall to allow FTP ...
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100 views

Windows Update Exception through Windows Firewall

We have a couple machines deployed to a retail environment and due to budget constraints, are limited to Windows Firewall as our firewall. We inherently block all outgoing connections, and ...
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51 views

“Predefined set of computers”, where to define?

In windows server 2012, "Windows Firewall with Advanced Security", when defining allowable adresses, I can select adresses/subnets, address-ranges, or a pulldown with "Predifined set of computers" I'...
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153 views

Website on IIS works on localhost but not from outside/via IP

I just created a Windows VM on Azure and installed IIS on it. I created a simple HTML file which works if you enter localhost but it's not accessible via the server IP. I googled for a long time and ...
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49 views

Remote Login to firewalled server

We are a very small startup (.net) with a dev team of 3 that previous had only a single webserver with both the application and database. To improve the security in our infrastructure, I've added our ...
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2answers
50 views

Windows firewall blocking inbound port 9000 (xdebug), even though inbound rule created

I have been trying to allow computer A (LAMP with xdebug configured) connect to computer B (Eclipse IDE with xdebug) via port 9000. Both are on running on my local network. I created an inbound rule ...
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119 views

Change or delete local windows firewall rule using group policy firewall rules

When I install a particular program on a computer it creates an overly lenient local firewall rule that allows inbound connections to port 1234 from any subnet. I want to create a more restrictive ...
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1answer
164 views

On Azure Windows VM, Why do some ports open fine and others do not?

I am trying to set up FileMaker Server on a new Azure Windows 2012 VM (not classic). The step that has me flummoxed is opening the ports. I have created the inbound end points for the three required ...
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1answer
12 views

Granular Windows firewall rule control

Is there a way using group policy (or some other built in mechanism) to apply firewall rules in such a way that a subset of the rules are locked and cannot be changed or overridden, but another subset ...
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1answer
36 views

Whitelisting only specific ip range or program windows firewall

I want my windows firewall to block all of the connections, except connections who are RDP connections (to the RDP port), smb (smb port?), and from specific IP ranges. I've tried to add a rule that ...
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28 views

Windows Server 2008R2 / IIS 7.5 VM Open Ports

I have a Windows Server 2008 R2 / IIS 7.5 server Hyper-v VM which when I run NMAP shows a lot of open ports. This server acts as a web server running Wordpress sites so it also needs MySQL. I am ...
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35 views

Remote Desktop can not access LAN PC

Have a Cisco VPN - I am able to login, and RDP to the SBS server. When I try to access the LAN PC's they are not responding. ireshark the connections on all the PCS at the time of the request, and I ...
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46 views

Windows Server 2012 firewall won't block SQL Server ports from WAN without blocking them on LAN as well

I have to open access to a web app in IIS on both LAN and WAN and an SQL Server instance on LAN only. Both the Web and SQL servers are currently running on the same Windows Server 2012 R2 install. ...
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63 views

Block Windows Service Access to Remote SQL Server with Firewall

So I've got a fun firewall question. We have a windows service that we have running on a Windows Server 2012 instance. It is connecting to a remote SQL Server that we do not own, among other things. ...
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1answer
72 views

How can i open correct ports on windows firewall for apache instead of using all?

I installed an Apache2 (8085 and 8086 ports) in a fresh windows 2008 R2 installation. But i found a problem opening ports. I opened the firewall for the program httpd.exe (full and correct path) for ...
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28 views

Windows Firewall - Block IP address

The configuration is exactly as following: I am absolutely certain that 192.168.2.6 is the correct IP address, yet the according computer remains able to access shared files. Where could I go wrong?...
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310 views

PsExec Slow to connect when Windows Firewall Enabled

situation: running PsExec takes 20 seconds with windows firewall and 1 second with it disabled. Exceptions added to firewall: opened ports 135 and 445 (both tcp) as per http://...
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1answer
105 views

I can't block port 22 to a specific IP (windows server 2008R2)

I'm using Bitvise SSH server and recently get a connection attempt every minute from one IP number. Bitvise terminates the connection immediately, but it's been going on every minute for days and I ...
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38 views

Do new Windows firewall rules affect currently open connections?

If I added a rule to windows firewall that blocked an ip or port currently used by an open connection, does that rule take effect immediately or only after the connection were closed? I.e, If I have ...
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8 views

Reusable scope in windows firewall

Windows firewall has the concept of scope wherein a scope can be a list of IP blocks, or a predefined "set" (e.g.: localsubnet, gateway, WINS, etc.) Is there a way to modify and/or create a custom "...
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23 views

Windows Firewall - NAT to share VPN connection [closed]

I have a Windows 7 workstaion which has a permanent VPN connection to a supplier. There are several users who need to access the supplier's server from their own computers through this "gateway". ...
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1answer
244 views

How to modify Azure VM firewall rule for remote desktop

On an Azure VM I edited the Windows Firewall rule "RemoteDesktop-UserMode-In-TCP" so that only our Remote IP address was allowed access. In order to do this I also had to select General > Action > ...
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24 views

Network adapter blocks connections after 1 hour

Recently imported a Windows 2008 R2 standard server into AWS EC2 Windows firewall is enabled and RDP etc functions ok through it. After exactly 1 hour all network traffic is blocked. Rebooting the ...
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63 views

Can I disable the Base Filtering Service in Windows 2012 for isolating a fault?

I've got an ongoing problem with Windows 2012 incoming connections (I won't go into that now as its on another question). However to do some on-site testing. I believe I need to disable the Base ...
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227 views

Why would Windows Server 2012 not respond on ports above 6000?

This is a new question but similar to this previous one. I've inherited the management of a Windows 2012 Server (not R2) and I'm unable to get a response from any ports above 6000. I have services ...
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62 views

Configure Windows Firewall using GPO: Logging file path cannot be set

We are having a strange issue with Windows Firewall setting. The logging file path cannot be set. After I have enabled the Logging setting and click on OK to save the setting. When I open up logging ...
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19 views

How to log Windows Advanced Firewall rule matches?

One server should accept connection to certain a port from only one IP. However it accepts this connection from any IP even without any explicit rules. While manually disabling-enabling each rule to ...
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1answer
88 views

Change network category

My server has two network interfaces, one for public interface and one for internal management. These networks are completely isolated from each other. Both have own cables, routers and so on. I'm ...
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45 views

Windows Firewall Connection Security, require encryption with IPv6?

I've set up Windows Firewall on a Server 2012 R2 to always require IPSec Encryption for all Connection Security Rules. I've then specified Inbound Rules for specific ports and services, and ...
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88 views

Windows Firewall Blocks GPMC

Found out that my Server 2008 R2 machine is not running firewall as it should. When I enable the firewall and try to open GPMC it states that it is unable to access the GPMC or the Primary Domain ...
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2answers
406 views

Curious about some failures with DCDIAG

I ran a c:\dcidag /v /c /e test (/v = verbose, /c = comprehensive, /e = every DC) on all of my (currently) 5 Domain Controllers, and received this summary of results at the end: ...
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1answer
59 views

Stop Server attacks

I had many attacks on the port 1433 of my DB . I renamed the SA account and changed the DB port (my problem was solved thanks to dba.stackexchange.com ) . But i went to the windows server logs again ...
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3answers
227 views

AWS Security Groups vs Windows Firewall

Is it considered best practice to disable the Windows Firewall on an Amazon EC2 instance, and control traffic only via EC2 Security Groups? If I open a port on the server firewall, and then open the ...
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63 views

Firewall ports for Serv-U Server - Windows Server 2008 R2

I am trying to set up Serv-U on Windows Server 2008 R2, but am unable to get the ports working in the Windows Firewall. I also don't have a domain pointing at this server at the moment, as we are ...
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218 views

Blocking inbound port 80 in Windows Firewall not working

In IIS, I have a website that is bound to HTTP (port 80) and HTTPS (port 443). I want to test blocking certain IP addresses from reaching this website. In Windows Firewall, I have a Block rule (...
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48 views

Only allow traffic trough port 80 in firewall

In our firewall we want to only allow port 80 and close all other ports. This is easy to do, but how can we test if the firewall is only allowing port 80. How do you test and confirm that the ...
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63 views

Use RRAS Assigned Static IP for TCP

I'm using RRAS on Windows Server 2012 to establish a VPN client connection from a server I have offsite and my home computer. What I would like to do is use the RRAS assigned static IP that I am ...
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1answer
32 views

Firewall Security Issue

I'm running a few servers off Windows Server 2008, although I have some problems with client connections. To troubleshoot the issue I have clients ping an IP that is behind a router, and they are able ...
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1answer
97 views

Windows port forwarding, local machine to server

I'm working on Windows 8. I'm trying to connect to an OpenStack cloud which is hosted on a remote server but has a public IP to the API. However, making API calls require calls to additional services ...
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0answers
370 views

Disable Network Discovery prompt in Windows 2012 R2?

I have a deployment server (WDS + MDT) for technicians to image remote servers in the data center. Our images have all Windows Firewall profiles disabled. Problem is recently some technicians have ...
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11 views

Firewall effect - connected with some ISP v/s ISP + VPN [duplicate]

Suppose I am connected to internet using some ISP (could be a private/personal ISP or office/company ISP) and I am accessing a website. Questions: Only my laptop's firewall be in effect or ...
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157 views

Windows firewall rule disables 'itself'

I have a server running Windows Server 2012 r2. On this server I set-up a rule in Windows Firewall to allow specific ports used in NAT. This rule works great, but every day or so it seems to just ...