Lulu works in pretty much the same way as Little Snitch. Pros: Lots of options that put you in controlĬons: A bit pricey and maybe too advanced for beginners It’s a little expensive but worth it if you need total control. Although the focus is very much on outgoing connections, Little Snitch can also control incoming connections to a lesser degree. And you want to avoid notifications, you can run Little Snitch in Silent Mode, which will allow or deny all connections. Using Little Snitch’s built-in Network Monitor, you can view and analyze any processes that are showing network activity. So you could allow an app to connect to certain servers but not others. These rules are based not only on the app that’s trying to connect to the internet but also the domain it’s trying to connect to. You can then edit these rules in the Little Snitch client. When you choose to block or allow an app access to the internet, Little Snitch creates a rule. You can also set it for a certain period of time or permanently. And you can apply that decision once, or until you restart your Mac, quit the app or log out. You can then choose whether to allow the connection or to block it. Install Little Snitch, and whenever an app tries to connect to the internet, you’ll get a notification. If you want something more user friendly, you’ll need a third-party firewall. The macOS firewall isn’t built to do this, but it is possible with PF (Packet Filter), macOS’s more advanced firewall that can only be controlled via the Terminal command line. ![]() ![]() That includes malware, which may try to send your data to hackers. In that scenario, you might be at risk of poor security or even a fake network.Īnother good reason to use a firewall is to control which Mac apps can connect to the internet. One such case is when you’re connected to a public network - for example, if you hook your MacBook up to wi-fi in a hotel. The combination of these factors is why Apple doesn’t make a big deal about the macOS firewall.īut there are times when a firewall app can be a handy thing to have on your Mac. On top of that, your router will also have its own firewall, so in most cases you don’t need any extra protection. That’s partly due to the fact macOS doesn’t run services that listen for network connections. Specifically the fact that Mac users generally don’t need any extra firewall software to be enabled. But macOS comes with a firewall built in - and by default, it’s turned off. My M1 is likely to get Little Snitch soon.Best balance of cost and features: Vallumīefore buying a firewall for your Mac, you first have to decide whether you actually need one. Sure it's nice that Patrick Wardell makes his great software available for "free" (he does ask for support on Patreon), but I'd rather pay for the more robust features in Little Snitch. On Reddit I see a lot of threads which can be summarized as "LuLu is better because it's free." Uh, ok, but software doesn't grow on trees. I haven't experienced any particular slowdown - unless a LuLu alert gets burried under other windows, awaiting user action. Each time Zoom attempts the connection, there's a big warning window (which incidentally, doesn't match the LuLu UI leading to confusion). And LuLu keeps popping up alerts during s that "warn" me about an untrusted certificate (which is the result of NextDNS blocking ) there is no way to stop this alert in LuLu. Little Snitch is much more flexible on temporary rules and specifying domains, IPs, ports, etc. LuLu is somewhat disappointing to me: the UI is, well, spartan if not homely, and it has quite a bit less functionality than Little Snitch. ![]() ![]() I'm using it on one M1 Mac, but stick with Little Snitch on my other Macs. Lulu has advanced quite a bit since this thread started.
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