Little Snitch for Linux!

Started by rjzak, April 10, 2026, 10:00:56 PM

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rjzak

The creators of Little Snitch, a common application-layer firewall for Mac OS, have created a Linux version which is partially open source: https://github.com/obdev/littlesnitch-linux, https://obdev.at/products/littlesnitch-linux/download.html.

I have an email thread with one of the devs for PowerPC support, which seems positive!

MPC7500


tle

Isn't it the popular firewall for OSX? I fondly remember then it was quite good
Faithful Linux enthusiast

My Raptor Blackbird

TimKelly

I use it for OS X, and it is a fine product, but in reality it has limited usefulness due to the consolidation on cloud computing and the control of the Internet by Google.  It is not possible to limit connections to miscreant sites without blocking legitimate ones, if they share the same ip address(es) or blocks, as is common with cloud computing.  It is not possible to block Google without breaking some or all functionality of perhaps 90% of web sites, since so many sites rely on Google APIs for the creating of their sites.

rjzak

Quote from: TimKelly on April 12, 2026, 05:15:22 PM
I use it for OS X, and it is a fine product, but in reality it has limited usefulness due to the consolidation on cloud computing and the control of the Internet by Google.  It is not possible to limit connections to miscreant sites without blocking legitimate ones, if they share the same ip address(es) or blocks, as is common with cloud computing.  It is not possible to block Google without breaking some or all functionality of perhaps 90% of web sites, since so many sites rely on Google APIs for the creating of their sites.

You can block some of Google and on a per-app basis, which is what's cool about Little Snitch.

rjzak

PPC64le port is now available: https://obdev.at/products/littlesnitch-linux/download.html, direct link: https://obdev.at/downloads/littlesnitch-linux/littlesnitch_1.0.3_ppc64el.deb

I haven't been able to get it to work. On Debian 13 with kernel 6.12.74, I'm getting an bpf error:
Apr 20 20:08:32 behemoth littlesnitch[28597]: Error: `bpf_raw_tracepoint_open` failed
Apr 20 20:08:32 behemoth littlesnitch[28597]: Caused by:
Apr 20 20:08:32 behemoth littlesnitch[28597]:     Unknown error 524 (os error 524)
Apr 20 20:08:32 behemoth systemd[1]: littlesnitch.service: Main process exited, code=exited, status=1/FAILURE
Apr 20 20:08:32 behemoth systemd[1]: littlesnitch.service: Failed with result 'exit-code'.