DNAT failure

DNAT failure

[P theodorou]

Hello

I  face problem with DNAT  this is my testing script

INET_IP="84.9.x.x"
INET_IFACE="eth0"

LAN_IP="192.168.0.1"
LAN_IFACE="eth1"
DMZ_HTTP_IP="192.168.0.4"


O_IFACE="lo"
LO_IP="127.0.0.1"


IPTABLES="/usr/sbin/iptables"


/sbin/depmod -a




/sbin/modprobe ip_tables
/sbin/modprobe ip_conntrack
/sbin/modprobe iptable_filter
/sbin/modprobe iptable_mangle
/sbin/modprobe iptable_nat
/sbin/modprobe ipt_LOG
/sbin/modprobe ipt_limit
/sbin/modprobe ipt_state



echo "1" > /proc/sys/net/ipv4/ip_forward



$IPTABLES -P INPUT ACCEPT
$IPTABLES -P OUTPUT ACCEPT
$IPTABLES -P FORWARD ACCEPT



$IPTABLES -t nat -A PREROUTING -p tcp  -d $INET_IP --dport 80 \
-j DNAT --to-destination $DMZ_HTTP_IP



$IPTABLES -t nat -A POSTROUTING -o $INET_IFACE -j SNAT --to-source $INET_IP



i do not  have a clue what the problem  but whenever i type
the real ip on the browser i get error page doesn't exist .

any hint would be really appreciated

RE: DNAT failure

[P theodorou]

I have noticed that DNAT works whenever redirect to eth1 but not eth2
like here

$IPTABLES -t nat -A PREROUTING -p tcp  -i eth0  --dport 80 \
-j DNAT --to-destination  192.168.0.4   (eth1)


but when i try
$IPTABLES -t nat -A PREROUTING -p tcp  -i eth0  --dport 80 \
-j DNAT --to-destination  192.168.1.4 (eth2)




>From: "P theodorou" <props666999@hotmail.com>
>To: netfilter@lists.netfilter.org
>Subject: DNAT failure Date: Fri, 04 Nov 2005 21:30:32 +0000
>
>Hello
>
>I  face problem with DNAT  this is my testing script
>
>INET_IP="84.9.x.x"
>INET_IFACE="eth0"
>
>LAN_IP="192.168.0.1"
>LAN_IFACE="eth1"
>DMZ_HTTP_IP="192.168.0.4"
>
>
>O_IFACE="lo"
>LO_IP="127.0.0.1"
>
>
>IPTABLES="/usr/sbin/iptables"
>
>
>/sbin/depmod -a
>
>
>
>
>/sbin/modprobe ip_tables
>/sbin/modprobe ip_conntrack
>/sbin/modprobe iptable_filter
>/sbin/modprobe iptable_mangle
>/sbin/modprobe iptable_nat
>/sbin/modprobe ipt_LOG
>/sbin/modprobe ipt_limit
>/sbin/modprobe ipt_state
>
>
>
>echo "1" > /proc/sys/net/ipv4/ip_forward
>
>
>
>$IPTABLES -P INPUT ACCEPT
>$IPTABLES -P OUTPUT ACCEPT
>$IPTABLES -P FORWARD ACCEPT
>
>
>
>$IPTABLES -t nat -A PREROUTING -p tcp  -d $INET_IP --dport 80 \
>-j DNAT --to-destination $DMZ_HTTP_IP
>
>
>
>$IPTABLES -t nat -A POSTROUTING -o $INET_IFACE -j SNAT --to-source $INET_IP
>
>
>
>i do not  have a clue what the problem  but whenever i type
>the real ip on the browser i get error page doesn't exist .
>
>any hint would be really appreciated
>
>
>