You could have a difficulty in case you are utilizing any third get together community extensions like LuLu / Little Snitch / VPNs / MDM. Very probably in case your machine is offered by your employer.
macOS Sequoia has apparently launched a bug in 15.0 the place the macOS Firewall would not play nicely with different networking merchandise. It is supposedly been acknowledged by Apple and stuck within the 15.1 Beta, construct is 24B5070a as of 2024-10-08. 15.1 is reportedly being launched on the finish of October.
macOS 15.0.1 went a way in direction of a repair, however nonetheless felt unreliable.
I’ve simply up to date to macOS 15.1 Beta 3 (24B5070a) and located that SMB copies and rsync (over ssh) appears to really feel extra strong. And with out wishing to pull up a really outdated meme, Safari does have a sure ‘snappiness’ about it, however every thing is relative.
The 15.1 replace brings another adjustments. There’s a new Filters part in Settings | Community. In fact in typical Apple trend there are actually 3 locations in Settings the place an extension’s behaviour can now be managed. eg. I see references to LuLu in:
- Settings | Community | Filter (the filter behaviour)
- Settings | Common | Login Objects & Extensions (the Login behaviour)
- Settings | Common | Login Objects & Extensions | Community Extensions (the extension behaviour)
Nonetheless, 15.1 would not but appear to carry a repair to the macOS Firewall (first seen in 15.0), the place deletion of outdated guidelines seems to nonetheless be disabled by way of the GUI.
Context
I’ve copied the bigger a part of this reply from a earlier reply I gave, on a presumably unrelated query. As such I repeat plenty of the identical references @bmike has given in his reply.
Personally I had an issue with dropped ssh connections to my native RPi4 NAS – often with some form of encryption error, and dropped file copies over SMB from the identical machine.
I questioned a couple of dangerous interplay with LuLu, and ended up uninstalling LuLu (appears a disable is not sufficient) till Apple repair the problem.
The selection seems to be, disable both of the third get together extensions, or the macOS FW.
SSH points:
DNS points:
One other situation the macOS firewall has is that present guidelines cannot be edited. the - button within the dialog is inactive. Presumably it may be carried out in Terminal however I’ve not experimented.