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December 19, 2015 00:19
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Simple example of piping a dynamically-generated fw ruleset into iptables-restore
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| cat <<-EOF | iptables-restore | |
| *nat | |
| :PREROUTING ACCEPT | |
| :INPUT ACCEPT | |
| :OUTPUT ACCEPT | |
| :POSTROUTING ACCEPT | |
| -A POSTROUTING -o $WAN_IFACE_HERE -j MASQUERADE | |
| COMMIT | |
| *filter | |
| :INPUT DROP | |
| :FORWARD DROP | |
| :OUTPUT ACCEPT | |
| -A FORWARD -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT | |
| -A FORWARD -i $LAN_IFACE_HERE -j ACCEPT | |
| -A INPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT | |
| -A INPUT -i lo+ -j ACCEPT | |
| COMMIT | |
| EOF |
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