Carlos E. R. wrote:
on my small laptop freshly installed with Leap 15.0 I get messages about blocking what I think are multicast from my router and my printer:
2018-06-21T14:23:38.716460+02:00 Legolas kernel: [103133.028003] FINAL_REJECT: IN=eth0 OUT= MAC=01:00:5e:00:00:01:f8:8e:85:64:78:f2:08:00 SRC=192.168.1.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=0 DF PROTO=2
protocol 2 is IGMP, so probably from your router.
2018-06-21T14:23:39.335490+02:00 Legolas kernel: [103133.646980] FINAL_REJECT: IN=eth0 OUT= MAC=01:00:5e:00:00:fb:00:1e:0b:08:4c:cb:08:00 SRC=192.168.1.3 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0x00 TTL=1 ID=27960 PROTO=2
224.0.0.251 is used by mDNS, I believe. I think this might be your printer saying "I want to use mDNS", but I don't know IGMP very well.
On my computers running 42.3 I don't see similar messages, but also I don't specificall open anything mentioning "224...".
Run a tcpdump, you'll see the same. Maybe the susefirewall opens for those by default?
I'm not familiar at all with the new firewalld, so I don't know what I should open. Or not.
What to open is a matter for you to decide :-) How to open - I guess that is covered in the firewalld gui ? -- Per Jessen, Zürich (26.6°C) http://www.cloudsuisse.com/ - your owncloud, hosted in Switzerland. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org