Deep Firewall Control
Network Security
Network Security Module

Deep Firewall Control

Block what shouldn't connect.

Untrusted programs and exploited LOLBins love to phone home. DFC slams the door shut. We inspect the reputation of every module—the slightest anomaly and all of a program's components get blocked.

Your network. Your rules. Zero exceptions.

Core Protection

Anomaly Detected? Everything Gets Blocked.

Traditional firewalls ask "where is it going?" We ask "who's trying to go—and what's their reputation?" DFC inspects every module of every program attempting network access. The slightest anomaly triggers a full lockdown of all that program's components.

Using correlational logic, we trace connections between executables, DLLs, and child processes. If one piece looks suspicious, everything related gets cut off. No partial measures, no gaps to exploit.

LOLBin Defense

Living Off the Land? Not on Our Watch.

Attackers love abusing built-in Windows tools to fly under the radar. These "Living Off the Land Binaries" are legitimate tools turned into weapons. DFC blocks their network access when they're being exploited.

wscript cscript mshta rundll32 regsvr32 certutil bitsadmin + more
Under the Hood

Windows Filtering Platform Powered

No flimsy wrappers here. DFC hooks directly into Windows Filtering Platform—the same infrastructure Windows Firewall uses. Kernel-level blocking that malware can't easily bypass. Rules persist across reboots and survive attempts to tamper.

Trust Verification

Reputation-Based Module Inspection

Every module gets its reputation checked against multiple intelligence sources. We don't just look at the main executable—we inspect every DLL, every dependency, every component. One bad actor in the chain and the whole program loses network privileges.

Fast
Folder Scanning

Scan entire directories for suspicious executables. Inspect module reputation and create blocking rules for entire folders in seconds, not minutes.

Set & Forget

Persistent Rules

Rules survive reboots. Once blocked, always blocked—until you say otherwise. Your rules stay protected from tampering.

Your Control

Full Visibility

See every rule, enable or disable at will, remove what you don't need. You're always in the driver's seat.

WFP
Native Integration
0
Dependencies
C++
Native Code

DFC vs Behavioral Airlock

One blocks known threats. The other anticipates attacks before they happen.

Reactive

Deep Firewall Control

"Block what shouldn't connect"

  • Module reputation inspection
  • Correlational blocking logic
  • Block exploited LOLBins
  • Windows Filtering Platform
  • Persistent rules
  • Folder scanning
  • Free with Defender Hardening
Proactive

Behavioral Airlock

"Anticipate and neutralize"

  • Everything in DFC
  • Real-time traffic analysis
  • Behavioral pattern detection
  • Automatic threat blocking
  • Traffic & behavior correlation
  • Zero-day connection blocking
  • Comes with Helios Pro

Lock Down Your Network

Deep Firewall Control is included free with the Defender Hardening Console.

Download Now — It's Free

Also From HEAP

Helios Engine

The sun sees everything. So does Helios. Our AI-powered threat detection engine blends static and behavioral analysis to catch what others miss. Aggressive heuristics, 40+ botnet detection patterns, and correlational analysis that traces threats across your entire system.

Learn more about Helios →