simplewall
Definitely for advanced users.
Description:
Simple tool to configure Windows Filtering Platform (WFP) which can configure network activity on your computer.
The lightweight application is less than a megabyte, and it is compatible with Windows 7 SP1 and higher operating systems.
You can download either the installer or portable version. For correct working you are require administrator rights.
Nota bene:
Keep in mind, simplewall is not a control UI over Windows Firewall, and does not interact in any level with Windows Firewall. It works
over Windows Filtering Platform (WFP) which is a set of internal API and system services that provide a platform for creating network filtering
applications. Windows Filtering Platform is a development technology and not a firewall itself, but simplewall is the tool that uses this technology.
Features:
- Simple interface without annoying pop ups
- Rules editor (create your own rules)
- Internal blocklist (block Windows spy / telemetry)
- Dropped packets information with notification and logging to a file feature (win7+)
- Allowed packets information with logging to a file feature (win8+)
- Windows Subsystem for Linux (WSL) support
- Windows Store support (win8+)
- Windows services support
- Free and open source
- Localization support
- IPv6 support
To activate portable mode, create "simplewall.ini" in application folder, or move it from "%APPDATA%\Henry++\simplewall".
System requirements:
- Windows 7, 8, 8.1, 10, 11 64-bit/ARM64
- An SSE2-capable CPU
KB2533623 KB3063858 update for Windows 7 was required
Donate:
GPG Signature:
Binaries have GPG signature simplewall.exe.sig in application folder.
- Public key: pubkey.asc (pgpkeys.eu)
- Key ID: 0x5635B5FD
- Fingerprint: D985 2361 1524 AB29 BE73 30AC 2881 20A7 5635 B5FD
Reviews of idiots:
Look at them, he does not know about .gitmodules and how to use, lol.
PS: Without idiots we are not to be fun, yeah!
Installation:
When install rules, you can choose two modes:
- Permanent rules - rules are working until you disable it manually.
- Temporary rules - rules are reset after the next reboot.
Uninstall:
When you uninstall simplewall, all previously configured filters stay alive in system.
To remove all filters created by simplewall, start simplewall and press “Disable filters” button.
Command line:
-install - enable filtering.
-install -temp - enable filtering until next reboot.
-install -silent - enable filtering without prompt.
-uninstall - remove all installed filters.
Rules editor:
simplewall have two types of custom user rules rules:
- Global rules: rule applied for all applications.
- Special rules: rule applied only for specified applications.
To set rule applications, open rule and then navigate to “Apps” tab.
Rule syntax format:
- IP addresses
192.168.0.1; 192.168.0.1; [fc00::]
- IP addresses with port
192.168.0.1:80; 192.168.0.1:443; [fc00::]:443;
- IP ranges
192.168.0.1-192.168.0.255; 192.168.0.1-192.168.0.255;
- IP ranges (with port)
192.168.0.1-192.168.0.255:80; 192.168.0.1-192.168.0.255:443; (v2.0.20+)
- IP with prefix lengths (CIDR)
192.168.0.0/16; 192.168.0.0/24; fe80::/10
- Ports
21; 80; 443;
- Ports ranges
20-21; 49152-65534;
To specify more than one ip, port and/or host, use semicolon.
IPv4 CIDR blocks:
| Address format |
Mask |
| a.b.c.d/32 |
255.255.255.255 |
| a.b.c.d/31 |
255.255.255.254 |
| a.b.c.d/30 |
255.255.255.252 |
| a.b.c.d/29 |
255.255.255.248 |
| a.b.c.d/28 |
255.255.255.240 |
| a.b.c.d/27 |
255.255.255.224 |
| a.b.c.d/26 |
255.255.255.192 |
| a.b.c.d/25 |
255.255.255.128 |
| a.b.c.0/24 |
255.255.255.0 |
| a.b.c.0/23 |
255.255.254.0 |
| a.b.c.0/22 |
255.255.252.0 |
| a.b.c.0/21 |
255.255.248.0 |
| a.b.c.0/20 |
255.255.240.0 |
| a.b.c.0/19 |
255.255.224.0 |
| a.b.c.0/18 |
255.255.192.0 |
| a.b.c.0/17 |
255.255.128.0 |
| a.b.0.0/16 |
255.255.0.0 |
| a.b.0.0/15 |
255.254.0.0 |
| a.b.0.0/14 |
255.252.0.0 |
| a.b.0.0/13 |
255.248.0.0 |
| a.b.0.0/12 |
255.240.0.0 |
| a.b.0.0/11 |
255.224.0.0 |
| a.b.0.0/10 |
255.192.0.0 |
| a.b.0.0/9 |
255.128.0.0 |
| a.0.0.0/8 |
255.0.0.0 |
| a.0.0.0/7 |
254.0.0.0 |
| a.0.0.0/6 |
252.0.0.0 |
| a.0.0.0/5 |
248.0.0.0 |
| a.0.0.0/4 |
240.0.0.0 |
| a.0.0.0/3 |
224.0.0.0 |
| a.0.0.0/2 |
192.0.0.0 |
| a.0.0.0/1 |
128.0.0.0 |
| 0.0.0.0/0 |
0.0.0.0 |
IPv6 CIDR blocks:
FAQ:
Q: Are internet connections blocked when simplewall is not running?
A: Yes. Installed filters are working even if simplewall is terminated.
Q: What apps are blocked in default configuration?
A: By default, simplewall blocks all applications. You do not need to create custom rules to block specific applications.
Q: Is it safe to use simplewall with Windows Firewall?
A: Yes. You do not need to disable Windows Firewall. These two firewalls work independently.
Q: How can i disable blocklist entirely?
A: Open Settings -> Blocklist and then click the radio buttons labeled Disable.
Q: Where is blacklist mode?
A: Blacklist was removed many days ago for uselessness. But if you need it, you can still configure it.
Solution: Configure blacklist mode in simplewall:
- Open
Settings -> Rules
- Uncheck
Block outbound for all and Block inbound for all options.
- Create user rule (green cross on toolbar) with block action, any direction,
Block connection name and empty remote and local rule.
- You can assign this rule for apps whatever you want to block network access.
Q: Why does my network icon have an exclamation mark?
A: When you are connected to a network, Windows checks for internet connectivity using Active Probing. This feature is named as NCSI (Network Connectivity Status Indicator). You can resolve this problem in one of the following ways:
Solution 1: Enable NCSI through internal system rule:
- Open
System rules tab.
- Allow
NCSI rule (enabled by default).
Solution 2: Disable NCSI through system registry:
Create Disable NCSI.reg and import it into registry.
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\NetworkConnectivityStatusIndicator]
"NoActiveProbe"=dword:00000001
"DisablePassivePolling"=dword:00000001
Solution 3: Disable NCSI through group policy:
- Launch the group policy editor (
gpedit.msc ).
- Go to
Computer Configuration -> Administrative Templates -> System -> Internet Communication Management -> Internet Communication Settings.
- Double-click
Turn off Windows Network Connectivity Status Indicator active tests and then select Enabled. Click Ok.
- Open the Command Prompt (Admin) and enter
gpupdate /force to enforce the changes made to the Group Policies.
Q: How can I disable Windows Firewall?
Start the command line as an administrator, and enter the commands below.
Disable Windows Firewall profiles:
netsh advfirewall set allprofiles state off
Enable Windows Firewall profiles:
netsh advfirewall set allprofiles state on
Start the command line as an administrator, and enter the commands below.
Dump filters information saved into a `filters.xml` file:
cd /d %USERPROFILE%\Desktop
netsh wfp show filters
Dump providers, callouts and layers information into a `wfpstate.xml` file:
cd /d %USERPROFILE%\Desktop
netsh wfp show state
Open it in any text editor and study.
Q: How to fix Windows Update internet access?
Windows 10 and above:
Open main window menu Settings -> Rules -> Allow Windows Update.
This is working by method described here.
Windows 8.1:
Open main window, Navigate into System rules tab and then enable Windows Update service rule.
Q: Other questions:
Undocumented options:
IsSaveAppsWithEnvironment=TRUE # 4.0+
IsNetworkMonitorEnabled=TRUE
IsInternalRulesDisabled=FALSE
IsBackupProfile=TRUE
BackupPeriod=BACKUP_HOURS_PERIOD
BackupTimestamp=0
IsOCSPEnabled=FALSE
UseStealthMode=TRUE
© 2016-2026 Henry++
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