On 30.04.2023 09:46, Per Jessen wrote:
Carlos E. R. wrote:
How do I interpret this one?
<0.4> 2023-04-29T23:12:01.790378+02:00 Isengard kernel - - - [1293859.876603][ C3] FINAL_REJECT: IN=eth0 OUT=MAC=ff:ff:ff:ff:ff:ff:96:...:00 SRC=0.0.0.0 DST=255.255.255.255 LEN=322 TOS=0x10 PREC=0x00 TTL=64 ID=0 DF PROTO=UDP SPT=68 DPT=67 LEN=302
It seems to be the one remaining noise on the firewall. It is about DHCP, and a broadcast, that I know. But I don't know if I should accept, reject, drop, nor how to accept them, or silence them.
It's a dhcp client looking for a dhcp server - what to do with it is up to you, depends on your context.
And it logs MAC address which allows finding the system sending this request. https://www.net.co.at/doc/howto/docs/iptables_netfilter_howto_de/docs/netfil...