Vallum 1.3.1 May 2026

“Vallum's interface is a little confusing, but it's a powerful app, and it comes at a great price... much cheaper than Little Snitch, despite sharing many of the same features.” MacUpdate · 4 years ago Comparison at a Glance macOS Built-in (ALF) Yes (Core focus) Inbound Filtering Rule Specificity Hostname, Port, Protocol, User App-level only Interface Icon-based, Menulet System Preferences Interaction Interactive, Silent, or "Jail" modes Mostly silent 5 Best Firewall Apps for Mac Owners in 2021 - MacUpdate

is a version of the popular macOS application-layer firewall that notably focuses on performance optimization and refined inter-process communication. Unlike the built-in macOS firewall which primarily filters inbound traffic, Vallum provides granular control over outbound connections. Key Version 1.3.1 Enhancements

: The "Flows Monitor" engine can now be disabled to save CPU resources. On Intel-based Macs, it is disabled by default to prioritize system speed.

: You can set rules that only activate when connected to specific WiFi hotspots or VPNs.