TPPORT_HTTP=1188
TPWS_USER=daemon
IPT_FILTER_HTTP="-p tcp --dport 80"

. /lib/functions/network.sh

network_find_wan wan_iface

for ext_iface in $wan_iface; do
    network_get_device DEVICE $ext_iface
    # DNAT for local traffic

    iptables -t nat -C OUTPUT -o $DEVICE -m owner ! --uid-owner $TPWS_USER $IPT_FILTER_HTTP -j DNAT --to 127.0.0.1:$TPPORT_HTTP ||
     iptables -t nat -I OUTPUT -o $DEVICE -m owner ! --uid-owner $TPWS_USER $IPT_FILTER_HTTP -j DNAT --to 127.0.0.1:$TPPORT_HTTP

done

network_get_device DEVICE lan
sysctl -w net.ipv4.conf.$DEVICE.route_localnet=1
iptables -t nat -C prerouting_lan_rule $IPT_FILTER_HTTP -j DNAT --to 127.0.0.1:$TPPORT_HTTP ||
 iptables -t nat -I prerouting_lan_rule $IPT_FILTER_HTTP -j DNAT --to 127.0.0.1:$TPPORT_HTTP