On 22/10/2018 11.53, Dave Howorth wrote:
On Mon, 22 Oct 2018 01:54:06 +0200 (CEST) "Carlos E. R." <> wrote:
El 2018-10-21 a las 22:46 +0100, Dave Howorth escribió:
I'm not clear. Is the firewall on a machine that serves some other purpose (server or desktop etc) or is it a pass-through firewall between your router and your LAN?
It is the firewall in the same machine that reports the log, running Leap 15.0. This laptop.
Why do you want to let them in if you don't know what they are for? I would suggest finding out what they are before allowing them to propagate.
It is my router who is sending the packages. I have no reason to block them.
But equally, you have no reason to allow them :) I would suggest that good practice is to block all inbound traffic unless you know exactly what it is. That is the default presumption should be to block.
My guess is that the router is trying to find out who is there, name and type. I have no objection to that, it is mine, not somebody else's. Also the printer, which was not powered up, sends that traffic. Cups does not automatically find the printer, might be related.
Router sends multicast. One laptop's firewall blocks it from getting inside the laptop. I don't want it to block it.
But again, if you don't know what it is, why not block it? Is anything broken?
Some feature of the router will fail, surely. Likely the one that shows information on what is connected.
But as Andrei says a search throws up lots of info. I used 'igmp firewalld' as search terms.
Thanks, I'll try that search term. -- Cheers / Saludos, Carlos E. R. (from openSUSE 15.0 (Legolas))