can't get it in iptables
Hello all,
I am trying to use iptables for nat.
Here is my firewall.sh
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#!/bin/sh
IPTABLES='/sbin/iptables'
# Set interface values
EXTIF='ppp0'
INTIF='eth1'
# enable ip forwarding in the kernel
/bin/echo 1 > /proc/sys/net/ipv4/ip_forward
# flush rules and delete chains
$IPTABLES -F
$IPTABLES -X
#Enable masquerading to allow LAN internet access
$IPTABLES -t nat -A POSTROUTING -o $EXTIF -j MASQUERADE
#Forward LAN traffic from LAN $INTIF to Internet $EXTIF
$IPTABLES -A FORWARD -i $INTIF -o $EXTIF -m state --state NEW,ESTABLISHED -j ACCEPT
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eth1 is 192.168 subnet so I give out internet to my local machines.
but there is also subnet 10.20 connected to server and I want to allow
all the pcs from my subnet 192.168 to acess 10.20 through server.
for now everything coming to server goes to ppp0.
How do I challenge that?
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