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23 lines
734 B
Plaintext
23 lines
734 B
Plaintext
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#!/bin/sh
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. /etc/functions.sh
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WAN=$(nvram_get wan_ifname)
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IPT=/usr/sbin/iptables
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for T in filter nat mangle ; do
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$IPT -t $T -F
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$IPT -t $T -X
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done
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$IPT -t filter -A INPUT -m state --state INVALID -j DROP
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$IPT -t filter -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
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$IPT -t filter -A INPUT -p icmp -j ACCEPT
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$IPT -t filter -A INPUT -i $WAN -p tcp -j REJECT --reject-with tcp-reset
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$IPT -t filter -A INPUT -i $WAN -j REJECT --reject-with icmp-port-unreachable
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$IPT -t filter -A FORWARD -m state --state INVALID -j DROP
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$IPT -t filter -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
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$IPT -t filter -A FORWARD -i $WAN -m state --state NEW,INVALID -j DROP
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$IPT -t nat -A POSTROUTING -o $WAN -j MASQUERADE
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