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windows firewall
About this tag
The Windows Firewall tag covers discussions about configuring and using the built-in firewall in Windows 10 and Windows 11. Topics include creating outbound block rules to prevent apps from accessing the internet, setting up a VPN kill switch that blocks all traffic when the VPN disconnects, and interpreting firewall log entries such as blocked connections from rundll32.exe. These threads focus on practical, intermediate-level firewall management for privacy, security, and network control without third-party software.
saw this in my firewall log... what is this about?
2026:06:15|02:46:06|Blocked|1|IPv4 TCP files.nflxso.ca/172.67.152.151:443(64973)|Windows host process (Rundll32)|MSOfflineZone/https[NoBln] Outgoing|C:\windows\syswow64\rundll32.exe
Set Up and Use Windows Firewall Outbound Rules to Stop Apps Going Online
Difficulty: Intermediate | Time Required: 15 minutes
If you want to stop a desktop app from accessing the internet without uninstalling it, Windows Firewall outbound rules are one of the most effective built-in tools you...
Create an Always-On VPN: Auto-Connect on Wi‑Fi + Kill Switch with Windows Firewall (Win10/11)
Difficulty: Intermediate | Time Required: 25 minutes
An “always-on” VPN setup is ideal when you want your PC to automatically protect itself the moment you join Wi‑Fi—and to stop all internet traffic if...