Note: This version does not support the developer preview of macOS Mojave (10.14). Use the latest Little Snitch 4.1 Nightly Build on macOS Mojave.
Rule Groups are sets of rules that anyone can create and publish on their web server for others to subscribe to. Whenever changes to the rules are made by the publisher, subscribers receive these changes.
This is useful for providing automatically updating blocklists, distributing a common set of rules to multiple computers in a corporate network, or for app developers who want to provide a set of rules to their customers to make it work seamlessly with Little Snitch.
To let you test this feature we provide an example rule group. To subscribe to this group, open Little Snitch Configuration, choose New Rule Group Subscription from the File menu, and enter the following URL:
You can find more information about subscribing and publishing in the documentation chapter Rule group subscriptions.
Made Silent Mode actually silent again. Starting in Little Snitch 4.0.5, processes with certain code signature issues caused connection alerts to appear even during Silent Mode. These appeared in more situations than we originally intended, though, so we redesigned how this works. Now, no connection alerts will appear during Silent Mode (as it was before Little Snitch 4.0.5), but you may see a notification in the top-right corner of the screen about connections being denied due to code signature issues.
In Little Snitch 4 we’ve introduced a new Internet Access Policy (IAP) standard, allowing third party app developers to bundle a policy file with their application containing information about the Internet connections their program is about to establish.
This gives developers the opportunity to describe the purpose of these connections, why they are necessary and why it’s recommended or necessary to allow them.
With Little Snitch 4.0.4 we’ve extended the policy format to allow providing dedicated information about potential consequences when denying a particular connection.
Whenever you choose to deny a connection via Little Snitch — either in the connection alert or in Network Monitor — we now display that information helping you to make a better informed decision.
For improved privacy the Little Snitch configuration file is now stored in an encrypted format. When switching to the encrypted format, a backup of the old, unencrypted configuration file is made. If you prefer to have only encrypted configuration files stored on disk, we recommend to remove any unencrypted backup files. Their filename contains a date and timestamp, and they are located in the following folders:
/Library/Application Support/Objective Development/Little Snitch/
~/Library/Application Support/Little Snitch/
To open these folders you can use Finder’s Go to Folder… command (⇧⌘G).
Since this version stores all configuration files in encrypted format, previous versions cannot read them. If you downgrade, all your rules and preferences are lost. In order to prevent data loss, this version makes a backup of your configuration at
/Library/Application Support/Objetive Development/Little Snitch/configuration_<dateandtime>.xpl before encrypting. Previous versions can restore from this backup via Little Snitch Configuration > Rules > Import from Backup….
Alternatively, you can make a backup of your configuration even in the new version (via Little Snitch Configuration > Rules > Backup…) and restore it after downgrading. Backups are not encrypted in order to keep them backward-compatible.