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iptables
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| *filter | |
| :INPUT DROP | |
| :FORWARD DROP | |
| :OUTPUT ACCEPT | |
| -A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT | |
| -A INPUT -i lo -j ACCEPT | |
| -A INPUT -p udp --dport 5353 -j ACCEPT | |
| -A INPUT -p icmp -j REJECT | |
| -A INPUT -p tcp -j REJECT --reject-with tcp-reset | |
| -A INPUT -p udp -j REJECT --reject-with icmp-port-unreachable | |
| -A INPUT -j REJECT --reject-with icmp-proto-unreachable | |
| COMMIT | |
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