33 lines
928 B
Bash
Executable file
33 lines
928 B
Bash
Executable file
#!/bin/sh
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# Create the DOCKER-USER chain if it doesn't exist
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iptables -N DOCKER-USER || true
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# Flush existing rules in the DOCKER-USER chain
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iptables -F DOCKER-USER
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# Get all external network interfaces
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interfaces=$(
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ip -o -f inet addr show |
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awk '{print $2}' |
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grep -E '^(enp|eth|wlan|wlp)' |
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sort -u
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)
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for iface in $interfaces; do
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# Allow traffic from LAN
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iptables -A DOCKER-USER -i "$iface" -s 127.0.0.1 -j ACCEPT
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iptables -A DOCKER-USER -i "$iface" -s 10.0.0.0/8 -j ACCEPT
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iptables -A DOCKER-USER -i "$iface" -s 192.168.0.0/16 -j ACCEPT
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# Allow established and related connections
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iptables -A DOCKER-USER -i "$iface" -m state --state RELATED,ESTABLISHED -j ACCEPT
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# Drop all other traffic
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iptables -A DOCKER-USER -i "$iface" -j DROP
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echo "iptables rules have been set up for interface: $iface"
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done
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# Return to the previous chain
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iptables -A DOCKER-USER -j RETURN
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