Håll koll på trafiken med Little Snitch

Håll koll på trafiken med Little Snitch

Little Snitch är ett komplement till din brandvägg. Programmet håller koll på inkommande och utgående trafik och du kan skapa regler för varje enskilt program om du vill.

Jag har det installerat i alla mina datorer. Huvudsakligen för att hålla koll på inkommande och utgående trafik. Skulle jag få in något ovälkommet så skulle trafiken avslöja det direkt och Little Snitch slå larm. Jag har också koll på inkommande trafik, speciellt om jag finns på ett öppet nät så vill jag se vilka som försöker anropa och skicka trafik till mig.
Jag vill helt enkelt veta vad min dator skickar och tar emot.


Little Snitch ligger som ett filter mellan mig och min dator och mellan min dator och omvärlden. Programmet frågar hur ny trafik ska hanteras vilket betyder att direkt efter installationen så får du många frågor men efter ett tag har du koll på alla trafik och Littel Snitch tystnar.
Little Snitch kostar strax under 32 Euro.

What’s New

Version 4.1:Note: Version 4 is a paid upgrade from previous versions.

  • Improved display of inactive rules in Little Snitch Configuration. If a rule is inactive for whatever reason – either if it’s not enabled, if it’s part of a profile that’s currently not activated, if it’s in a rule group that’s currently not activated, or if the entire network filter is turned off – the rule is now consistently displayed with a gray text color.
  • Focus Mode: Little Snitch Configuration has a new mode that allows you to focus on a specific subset of rules. Selecting one or more rules and then choosing Focus on Selected Rules or Focus on Rules Affecting Selection from the View menu will focus on just the rules you want to see, while leaving the search field free for further filtering. Focus Mode is also used for revealing matching rules from the connection alert or Network Monitor (e.g. by right-clicking a connection and choosing Show Corresponding Rules).
  • The rule groups “iCloud Services” and “macOS Services” (previously named “Managed Rules”) can now be activated and deactivated using a checkbox next to their name in Little Snitch Configuration’s left sidebar (previously, these checkboxes could be found in the preferences window). This allows you to see what rules these sets contain before activating them.
  • Profiles can now be activated and deactivated in Little Snitch Configuration’s left sidebar using a checkbox next to the profile.
  • The special “Code Signature Issue Override Rules” that Little Snitch creates under certain circumstances can now be edited in Little Snitch Configuration just like normal rules. This should make it less confusing to deal with situations where an application is reported to have no valid code signature. See Code signature issues > Special Code Signature Issue Override Rules for more details.
  • Connection alerts for applications that have an issue with their code signature now include direct links to the relevant section of the online documentation. The relevant chapter Code signature issues has been extended to provide much more details and examples for how Little Snitch behaves when an application without a valid code signature tries to establish a connection.
  • Added support for the current version of the QUIC protocol. This fixes an issue with connections from Google Chrome, where the connection alert only showed the IP address instead of the hostname under some circumstances.
  • In addition to checking that an application’s code signature is valid, Little Snitch now also checks the code signing certificate that was used to create the signature. Only certificates that were issued by Apple are currently accepted.
  • Improved Little Snitch Installer to prevent malicious software from hijacking the installation procedure. Credit to Patrick Wardle (Synack, Inc.) for discovering this possibility.
  • Many more minor improvements.
  • Fixed an issue where a connection alert could sometimes be shown despite an existing rule that allowed the connection. We observed this mainly with Google Chrome.
  • Fixed an issue in “Silent Mode – Deny Connections” where incoming TPC connections would sometimes be denied despite an existing rule that allowed the connection.
  • Fixed issues with Automatic Profile Switching when joining a new, yet unknown network.
  • Fixed an issue in the connection alert in conjunction with terminated processes when the “Confirm connection alert automatically” preferences option was turned on.
  • Fixed an issue causing VPN connections to be wrongly considered as local network connections due to an incorrect netmask of the P2P interface set by the IPSec client of macOS.
  • Fixed an issue causing the connection alert to repeatedly switch between different, pending connection attempts.
  • Fixed multiple issues that could lead to a Code Signature Alert showing an internal error. These alerts should be gone now for universal apps running in 32-bit mode and for Java apps.
  • Fixed an issue where a connection alert could disappear when the connecting process terminates.


  • Intel, 64-bit processor
  • OS X 10.11 or later

Little Snitch


Missa inte Mackens fråga!
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