networking - Please help me block this traffic - Ask Ubuntu


i have been trying disable functionality quite time, cannot seem figure out.

within 1 minute interval several packet sniffer tools report constant traffic all-systems.mcast.net set size of 14 bytes.

traffic

ubuntu@ubuntu:~$ netstat -g ipv6/ipv4 group assignments interface   refzäh group --------------- ------ --------------------- lo              1      all-systems.mcast.net eth0            1      all-systems.mcast.net lo              1      ip6-allnodes lo              1      ff01::1 eth0            1      ff02::1:ff84:d990 eth0            1      ip6-allnodes eth0            1      ff01::1

it's designated ip 224.0.0.1

ubuntu@ubuntu:~$ netstat -ng ipv6/ipv4 group assignments interface   refzäh group --------------- ------ --------------------- lo              1      224.0.0.1 eth0            1      224.0.0.1 lo              1      ff02::1 lo              1      ff01::1 eth0            1      ff02::1:ff84:d990 eth0            1      ff02::1 eth0            1      ff01::1

i have managed stop other multicast packets, namely traffic 224.0.0.251, using this:

sudo ifconfig eth0 -multicast

however, has not stopped all-systems.mcast.net traffic.

i have unsuccessfully tried iptables, inspired website regarding opposite of trying do: https://www.centos.org/forums/viewtopic.php?t=8286

sudo iptables -a input -s 224.0.0.0/4 -j reject sudo iptables -a input -d 224.0.0.0/4 -j reject sudo iptables -a input -s 240.0.0.0/5 -j reject sudo iptables -a input -m pkttype --pkt-type multicast -j reject sudo iptables -a input -m pkttype --pkt-type broadcast -j reject

does know how stop 224.0.0.1 / all-systems.mcast.net traffic?


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