-
- [ "$src" = wan ] && [ "$target" = DNAT ] && {
- local dest
- config_get dest "$cfg" dest "lan"
- [ "$dest" != "*" ] || return
-
- local net
- for net in $(find_networks "$dest"); do
- local lannet
- network_get_subnet lannet "$net" || return
-
- local proto
- config_get proto "$cfg" proto
-
- local epmin epmax extport
- config_get extport "$cfg" src_dport "1-65535"
- [ -n "$extport" ] || return
-
- epmin="${extport%[-:]*}"; epmax="${extport#*[-:]}"
- [ "${epmin#!}" != "$epmax" ] || epmax=""
-
- local ipmin ipmax intport
- config_get intport "$cfg" dest_port "$extport"
-
- ipmin="${intport%[-:]*}"; ipmax="${intport#*[-:]}"
- [ "${ipmin#!}" != "$ipmax" ] || ipmax=""
-
- local exthost
- config_get exthost "$cfg" src_dip "$wanip"
-
- local inthost
- config_get inthost "$cfg" dest_ip
- [ -n "$inthost" ] || return
-
- [ "$proto" = all ] && proto="tcp udp"
- [ "$proto" = tcpudp ] && proto="tcp udp"
-
- [ "${inthost#!}" = "$inthost" ] || return 0
- [ "${exthost#!}" = "$exthost" ] || return 0
-
- [ "${epmin#!}" != "$epmin" ] && \
- extport="! --dport ${epmin#!}${epmax:+:$epmax}" || \
- extport="--dport $epmin${epmax:+:$epmax}"
-
- [ "${ipmin#!}" != "$ipmin" ] && \
- intport="! --dport ${ipmin#!}${ipmax:+:$ipmax}" || \
- intport="--dport $ipmin${ipmax:+:$ipmax}"
-
- local p
- for p in ${proto:-tcp udp}; do
- case "$p" in
- tcp|udp|6|17)
- iptables -t nat -A nat_reflection_in \
- -s $lannet -d $exthost \
- -p $p $extport \
- -j DNAT --to $inthost:${ipmin#!}${ipmax:+-$ipmax}
-
- iptables -t nat -A nat_reflection_out \
- -s $lannet -d $inthost \
- -p $p $intport \
- -j SNAT --to-source ${lannet%%/*}
-
- iptables -t filter -A nat_reflection_fwd \
- -s $lannet -d $inthost \
- -p $p $intport \
- -j ACCEPT
- ;;
- esac
- done
+ [ "$target" = DNAT ] || return
+
+ prepare_chains
+
+ local net
+ for net in $(find_networks "$dest" 0); do
+ local intnet
+ network_get_subnet intnet "$net" || continue
+
+ local proto
+ config_get proto "$cfg" proto
+
+ local epmin epmax extport
+ config_get extport "$cfg" src_dport "1-65535"
+ [ -n "$extport" ] || return
+
+ epmin="${extport%[-:]*}"; epmax="${extport#*[-:]}"
+ [ "${epmin#!}" != "$epmax" ] || epmax=""
+
+ local ipmin ipmax intport
+ config_get intport "$cfg" dest_port "$extport"
+
+ ipmin="${intport%[-:]*}"; ipmax="${intport#*[-:]}"
+ [ "${ipmin#!}" != "$ipmax" ] || ipmax=""
+
+ local exthost
+ config_get exthost "$cfg" src_dip "$extip"
+
+ local inthost
+ config_get inthost "$cfg" dest_ip
+ [ -n "$inthost" ] || return
+
+ [ "$proto" = all ] && proto="tcp udp"
+ [ "$proto" = tcpudp ] && proto="tcp udp"
+
+ [ "${inthost#!}" = "$inthost" ] || return 0
+ [ "${exthost#!}" = "$exthost" ] || return 0
+
+ [ "${epmin#!}" != "$epmin" ] && \
+ extport="! --dport ${epmin#!}${epmax:+:$epmax}" || \
+ extport="--dport $epmin${epmax:+:$epmax}"
+
+ [ "${ipmin#!}" != "$ipmin" ] && \
+ intport="! --dport ${ipmin#!}${ipmax:+:$ipmax}" || \
+ intport="--dport $ipmin${ipmax:+:$ipmax}"
+
+ local p
+ for p in ${proto:-tcp udp}; do
+ case "$p" in
+ tcp|udp|6|17)
+ iptables -t nat -A nat_reflection_in \
+ -s $intnet -d $exthost \
+ -p $p $extport \
+ -m comment --comment "$INTERFACE" \
+ -j DNAT --to $inthost:${ipmin#!}${ipmax:+-$ipmax}
+
+ iptables -t nat -A nat_reflection_out \
+ -s $intnet -d $inthost \
+ -p $p $intport \
+ -m comment --comment "$INTERFACE" \
+ -j SNAT --to-source ${intnet%%/*}
+
+ iptables -t filter -A nat_reflection_fwd \
+ -s $intnet -d $inthost \
+ -p $p $intport \
+ -m comment --comment "$INTERFACE" \
+ -j ACCEPT
+ ;;
+ esac