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juliojsb/iptables-multicast.sh

Last active October 15, 2024 13:12
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Allow multicast communications in iptables
Raw
iptables-multicast.sh
Run the following:
iptables -A INPUT -m pkttype --pkt-type multicast -j ACCEPT
iptables -A FORWARD -m pkttype --pkt-type multicast -j ACCEPT
iptables -A OUTPUT -m pkttype --pkt-type multicast -j ACCEPT
Or:
iptables -A INPUT -s 224.0.0.0/4 -j ACCEPT
iptables -A FORWARD -s 224.0.0.0/4 -d 224.0.0.0/4 -j ACCEPT
iptables -A OUTPUT -d 224.0.0.0/4 -j ACCEPT
@hungkien05
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hungkien05 commented Jan 18, 2022 •
edited
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image

My network topology is shown in the picture. H1 will send multicast packet to H2 through R1 and R2. Which iptables rules should I set at R1 and R2 ?
Thanks in advance !

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