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LuLu is the free open-source macOS firewall

23 mentions on Hacker News by 23 people: 1 story, 22 comments · first 2018-01-19 · latest 2026-10-14

Mentions per year 23 mentions · busiest year 2021 (6)
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  1. Lulu is also very good as well! https://github.com/objective-see/lulu
    comment by vunderba · 2026-10-14 · in Show HN: Pulse Local, a Mac budgeting app whose AI models run on your machine
  2. for folks on the mac, Lulu has been a great option too. https://github.com/objective-see/LuLu
    comment by klueinc · 2026-04-09 · in Little Snitch comes to Linux, but the core logic is closed source
  3. …Snitch is commercial. If you want largely similar features (focused on egress), check out LuLu: https://github.com/objective-see/LuLu
    comment by mrexcess · 2026-02-26 · in AirSnitch: Demystifying and breaking client isolation in Wi-Fi networks [pdf]
  4. …It's not as feature rich nor has impressive UI like the former but gets the main work done. [0] https://github.com/objective-see/LuLu
    comment by np1810 · 2026-02-02 · in Notepad++ hijacked by state-sponsored actors
  5. As can the (FOSS) LuLu: https://github.com/objective-see/LuLu
    comment by JulianWasTaken · 2025-06-12 · in My Mac contacted 63 different Apple owned domains in an hour, while not is use
  6. How’s it compare to Objective See’s LuLu OSS https://github.com/objective-see/LuLu ?
    comment by pronouncedjerry · 2024-12-30 · in Little Snitch: Network Monitor and Application Firewall for macOS
  7. …(it will briefly initiate a connection even though there's a deny rule for that address etc). https://github.com/objective-see/LuLu
    comment by jiripospisil · 2024-08-10 · in OpenSnitch is a GNU/Linux interactive application firewall
  8. …search replacement ( https://www.raycast.com/ ) LuLu Firewall - An amazing FOSS firewall ( https://github.com/objective-see/LuLu )
    comment by schmeichel · 2024-06-09 · in Ask HN: What macOS apps/programs do you use daily and recommend?
  9. …to block a lot, but it's still sad that we need to do this. Apple alternatives include LuLu ( https://github.com/objective-see/LuLu ) On Linux you can use Opensnitch ( https://github.com/evilsocket/opensnitch )
    comment by 72deluxe · 2023-12-05 · in Windows users report appearance of unwanted HP app
  10. …as unless they changed their SDK/framework, is only supposed to happen on a crash report. 1: https://github.com/objective-see/LuLu/issues/488#issuecommen...
    comment by krono · 2022-09-26 · in macOS Free and Open-Source Security Tools by Objective-See
  11. Lulu setup for Sentry seems to be for crash dumps being sent: https://github.com/objective-see/LuLu/blob/dfe48c2a0f7a86361... It does seem like a good idea that this could be disabled but now it's hard coded. Issue on the topic:…
    comment by fnord123 · 2022-09-26 · in macOS Free and Open-Source Security Tools by Objective-See
  12. Open source for good measure: https://github.com/objective-see/LuLu
    comment by ignoramous · 2022-01-02 · in Portmaster – Open-source network monitor and firewall
  13. …that an excellent FOSS alternative is LuLu -- https://objective-see.com/products/lulu.html or https://github.com/objective-see/LuLu [last commit a week ago!]
    comment by azalemeth · 2021-10-31 · in Wacom drawing tablets track the name of every application that you open
  14. The same devs also make LuLu, an application firewall similar to Little Snitch: https://github.com/objective-see/LuLu
    comment by mkskm · 2021-02-21 · in New malware found on 30k Macs has security pros stumped
  15. …me for permissions next time. There is an issue open for that matter but no fix yet apparently: https://github.com/objective-see/LuLu/issues/147
    comment by hivacruz · 2021-01-12 · in Lulu – Mac open-source firewall that aims to block unknown outgoing connections
  16. Be aware there are a few concerning open issues like it blocking all network requests when disabled: https://github.com/objective-see/LuLu/issues/264 or not being able to login after installing (due to security patch needing to be…
    comment by shusson · 2021-01-12 · in Lulu – Mac open-source firewall that aims to block unknown outgoing connections
  17. …[4]: https://mullvad.net/en/blog/2020/11/16/big-no-big-sur-mullva... [5]: https://github.com/objective-see/LuLu/issues/208 [6]: https://sneak.berlin/20201204/on-trusting-macintosh-hardware...
    comment by niftylettuce · 2021-01-10 · in The M1 MacBook Air is the best computer I've ever owned
  18. Looks like changes will need to be made for LuLu to work on Big Sur: https://github.com/objective-see/LuLu/issues/183
    comment by konaraddi · 2020-07-01 · in New Mac ransomware spreading through piracy
  19. …firewall. [1] You can install it through Homebrew or download binaries manually [2]. [1] https://github.com/objective-see/LuLu [2] https://objective-see.com/products/lulu.html
    comment by Jerry2 · 2020-06-30 · in New Mac ransomware spreading through piracy
  20. …the VPN to get ads blocked. [1] https://www.linuxincluded.com/block-ads-malvertising-on-pfse... [2] https://github.com/objective-see/LuLu
    comment by Fnoord · 2020-02-14 · in Lockdown: Open-source firewall that blocks app tracking, ads, snooping
  21. …of outgoing connections for any given application, there's also the no-cost and open-sourced LuLu: https://github.com/objective-see/LuLu
    comment by gxnxcxcx · 2020-02-01 · in OpenSnitch is a GNU/Linux port of the Little Snitch application firewall
  22. …actually open source, as it's under a non-commercial clause. edit: there is an open issue about it: https://github.com/objective-see/LuLu/issues/4
    comment by jle17 · 2018-01-19 · in LuLu: An open-source macOS firewall that blocks unknown outgoing connections