Firewall App Blocker
Firewall App Blocker: A free, portable Windows tool for straightforward application-level firewall rules. Ranked #64 of 76 in Firewall Software by our editors (3.0/10); pricing: Free plan; best for simple portable Windows app blocking.
At a glance
- Editor score3.0 / 10
- PricingFree plan
- Best forSimple portable Windows app blocking
- Free planYes
- Paid fromFree
- Outbound controlAdvanced
- Facts checked22 Sep 2026
Where it wins
- Drag-and-drop blocking and unblocking for applications
- Inbound, outbound, whitelist, and command-line rule controls
- Portable distribution with Explorer context-menu integration
Where it doesn't
- Windows-only, with no support for other platforms
- Requires Windows Firewall to be enabled
- No central management, integrations, logging, or alerts
Our verdict on Firewall App Blocker
Firewall App Blocker is a free, portable Windows utility for managing application access through Windows Firewall. It is aimed at individual Windows users and administrators who want application-level controls without navigating Windows Firewall settings manually. Applications can be dragged into the interface for blocking or unblocking, while process selection and executable context-menu actions provide additional ways to add or change firewall rules.
Its strongest fit is straightforward control over both inbound and outbound traffic. Users can manage rules in either direction, enable whitelist mode to block non-whitelisted applications, and access command-line support for scripted control. Netsh command access, including local-subnet allowance, adds another option for users who prefer command-line workflows. The Freeware plan includes the portable application and Windows Firewall application management, with no paid tier described.
The product stays focused rather than functioning as a broader firewall platform. It supports Windows 7 through Windows 11 and depends on Windows Firewall being enabled, so it is not suited to users seeking cross-platform coverage or an independently managed firewall layer. It also does not provide central management, integrations, logging, or alerts. Choose Firewall App Blocker for portable, application-specific rule management on Windows; choose a broader firewall platform when centralized administration, monitoring, or wider ecosystem support matters.
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Firewall App Blocker pricing
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Firewall App Blocker fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Outbound control | Advanced |
| Rule direction | Both |
| Connection alerts | Not verified |
| Application rules | Yes |
| Supported platforms | Windows |
| Central management | Not verified |
| Deployment | Desktop |
| Platforms | Windows |
| Support | Docs |
| Built for | Solo, Small business (editorial estimate) |
| Pricing | Free plan (source) |
| Website | sordum.org |
| Facts checked | 22 Sep 2026 |
Alternatives to Firewall App Blocker
- FortiGateA broad hybrid firewall platform for organizations that need deep security and network controls.9.4
- Arista NG FirewallA broad firewall platform with a free plan and extensive network controls.9.3
- Google Cloud NGFWGoogle Cloud-native firewall protection with free rule evaluation and usage-priced advanced controls.9.2
See all Firewall App Blocker alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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