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merge iptables operation 4 and 6 for start_nat()

This commit is contained in:
garywill 2024-02-25 10:00:00 +08:00
parent 97269da898
commit 4db9dcbdb0
1 changed files with 16 additions and 9 deletions
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25
lnxrouter
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@ -999,7 +999,11 @@ iptb()
return $?
}
IP_VERs=("4" "6")
start_nat() {
local SUBNET_NET
if [[ $INTERNET_IFACE ]]; then
IPTABLES_NAT_OUT="-o ${INTERNET_IFACE}"
IPTABLES_NAT_IN="-i ${INTERNET_IFACE}"
@ -1009,15 +1013,18 @@ start_nat() {
fi
echo
echo "iptables: NAT "
if [[ $NO4 -eq 0 ]]; then
iptb 4 v nat I POSTROUTING -s "$SUBNET_NET4" $IPTABLES_NAT_OUT $MASQUERADE_NOTOUT ! -d "$SUBNET_NET4" -j MASQUERADE || die
iptb 4 v filter I FORWARD -i ${SUBNET_IFACE} $IPTABLES_NAT_OUT -s "$SUBNET_NET4" -j ACCEPT || die
iptb 4 v filter I FORWARD -o ${SUBNET_IFACE} $IPTABLES_NAT_IN -d "$SUBNET_NET4" -j ACCEPT || die
fi
iptb 6 v nat I POSTROUTING -s "$SUBNET_NET6" $IPTABLES_NAT_OUT $MASQUERADE_NOTOUT ! -d "$SUBNET_NET6" -j MASQUERADE || die
iptb 6 v filter I FORWARD -i ${SUBNET_IFACE} $IPTABLES_NAT_OUT -s "$SUBNET_NET6" -j ACCEPT || die
iptb 6 v filter I FORWARD -o ${SUBNET_IFACE} $IPTABLES_NAT_IN -d "$SUBNET_NET6" -j ACCEPT || die
for iv in "${IP_VERs[@]}"; do
[[ "$iv" -eq "4" && ! $NO4 -eq 0 ]] && continue
[[ "$iv" -eq "4" ]] && SUBNET_NET="$SUBNET_NET4"
[[ "$iv" -eq "6" ]] && SUBNET_NET="$SUBNET_NET6"
iptb "$iv" v nat I POSTROUTING -s "$SUBNET_NET" $IPTABLES_NAT_OUT $MASQUERADE_NOTOUT ! -d "$SUBNET_NET" -j MASQUERADE || die
iptb "$iv" v filter I FORWARD -i "$SUBNET_IFACE" $IPTABLES_NAT_OUT -s "$SUBNET_NET" -j ACCEPT || die
iptb "$iv" v filter I FORWARD -o "$SUBNET_IFACE" $IPTABLES_NAT_IN -d "$SUBNET_NET" -j ACCEPT || die
done
}
start_ban_lan() {