Open the Little Snitch Installer application and click the Uninstall button. If you don’t have the Installer available on your computer anymore, you can re-download it from our Download Page.
Yes, Little Snitch 2 is compatible with Mac OS X 10.5 Leopard.
Little Snitch 1.x, however, does not run on Leopard. Please download Little Snitch 2 instead if you wish to install Little Snitch on a computer running Mac OS X 10.5.
Little Snitch versions before 1.2 won't run on Mac OS X 10.4 Tiger. Please download and install Little Snitch 1.2 or Little Snitch 2 which both are compatible with Mac OS 10.4 Tiger.
Little Snitch only handles outgoing network connections on all network interfaces (AirPort, PPP, network cards, etc.). It intercepts and defers an application's network access until you decide to allow or deny the request, or it handles the request automatically based on an already defined rule.
Little Snitch does not intercept incoming connections. They can be blocked with the built-in firewall of Mac OS X. This firewall can be configured in System Preferences > Security > Firewall (or in System Preferences > Sharing > Firewall on Max OS X 10.4).
If you have an older version of Little Snitch 1 (prior to version 1.2.4) installed, Leopard may crash during startup. To fix the problem, hold down the Shift key during startup to start your computer in Safe Mode and to prevent Little Snitch from being loaded. Then upgrade to the latest version of Little Snitch 2 which is compatible with Mac OS X 10.5 Leopard.
The current version of Little Snitch is not yet fully compatible with Guest accounts on Mac OS X 10.5 (Leopard). When logged in to such accounts, changes made to the Little Snitch ruleset are not preserved after log out. This issue will be addressed in an upcoming version of Little Snitch.
If you add a "Deny any" rule for a particular application, you break basic system services, which are implemented as network connections to your own machine. One of these services is printing.
To fix that problem, use the new "Deny any network connection" rule instead of every "Deny any connection" rule.
If you want to print to a network printer, you must also allow connections to the host running the print service. We recommend that you add an "Allow any connection to local network" rule for the application in this case.
In general, we recommend that you test "Deny" rules as temporary rules ("Until Quit") before you make them permanent.
Open the Little Snitch preference pane within the "System Preferences" application.
Click on the round "lock" button to unlock the preference pane. You will be asked for your username and password.
After clicking the "Start" button you will be asked for the license key. If Little Snitch is active, click on "Stop" and after on "Start" and you will be asked for entering the license key. Use copy (Command + c) and paste (Command + v) to be sure.
"local network" stands for all your local subnets on all your active network cards + airport and so on. "local network" is computed from the network interface's current ip and mask. (depending on the number of active network interfaces it can be stand for more than only one IP-range) which is recomputed if you change your "Location". Also see our online documentation on Special Network Ranges.
Open the Little Snitch preference pane within the "System Preferences".
Click on the round "lock" button to unlock the preference pane. You will be asked for your username and password.
By clicking "Add..." you can create a new rule.
Click "Choose..." to get the open panel. You can now either select the application or you can enter the full path by by typing a "/" and then continue with the rest of the path.
Permission: Select "Deny" or "Allow"
Server: Select "Any" or enter a hostname or an IP-address
You could simple specify an ip range within the "Add" or "Edit" rule sheet by entering the base address and clicking on the button which appears at the right. After that use the appearing popup to select your range.
E.G., it's common to want to create a rule, which denies connections to a specific port or host, however allows all other connections
In this case simple create rules like these:
"TheApplication" Deny any connection to port 80
"TheApplication" Deny any connection to "some host"
"TheApplication" Allow any connection"
Note:
More specific rules overrules general rules!!
A rule for a single application overrules a rule for "any" application.
A rule for a single IP overrides a rule with an overlapping IP-range.
In general the rule with the smaller overlapping IP-range overrides the rule with the larger IP-range
