Radio Silence on a Mac
Lightweight macOS outbound firewall (app) · Security Tools
Radio Silence is a lightweight macOS outbound firewall; a simple Network Monitor plus a firewall list to block specific apps from phoning home, with very low overhead and no per-connection popups. Install the cask; manage rules in its app UI.
Run Radio Silence with FrontierStack
Install or connect Radio Silence; then check its status, ports and certificate from FrontierStack. The same screen links to firewall checks, Malware Audit and backups where they apply.
Run it from your Mac.
FrontierStack installs, monitors and secures services on this Mac and on linked servers.
Download FrontierStackApple notarized · Safe & secure · macOS 13 Ventura+