Scudo is a hybrid firewall for macOS that combines an inbound network-layer packet filter with an outbound application-layer firewall.
Scudo helps protecting your Mac’s network services from unwanted connections from remote computers and improves your privacy and security controlling all apps network activities, allowing you to choose which app is allowed to connect to the network.
Everything is controlled in a single window, its usage is really simple and safe. A detailed PDF manual is included in the package.
Easy to install and start
Protect your shared documents and network services
Protect your privacy blocking apps
Popup notifications: define inbound and outbound rules on the fly
Limit upload or download bandwidth
Protect your network from well-known dangerous hosts using on-line blacklists
Monitor connections and runtime rules