LuLu 4.5.7 for Mac
Mac UtilitiesLuLu is a free firewall for Mac from the Objective See foundation, built by security researcher Patrick Wardle. The firewall built into macOS mainly guards incoming traffic, while LuLu watches outgoing connections instead. Whenever a program tries to reach the internet for the first time, LuLu shows an alert and lets you allow or block it, which protects your privacy and can expose software that quietly contacts servers in the background.
Key Features
- Alert you when a program makes a new outgoing connection
- Allow or block each connection once, for a set time or for good
- Create detailed rules by process, address and port
- Profiles, allow lists and block lists for different situations
- Passive mode for quiet rule based filtering without alerts
- Free and open source, with the code published for anyone to inspect
How to Download
LuLu is distributed from the Objective See website as a signed disk image. Download it, copy the app to your Applications folder and follow the welcome steps, which guide you through approving its system extension and network filter. Download from the official site
Frequently Asked Questions
Is LuLu really free?
Yes. LuLu is free and open source, and the project is supported by donations and sponsors.
Does LuLu replace the macOS firewall?
No. They cover different directions. The macOS firewall watches incoming traffic, while LuLu watches outgoing connections.
Which macOS versions does LuLu support?
The current version runs on macOS 10.15 and later.
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