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Hello, I'm a 'Maquerading' amateur who needs help.
I have a home network, and one of my boxes
is a Linux 'gateway' box connected to the internet via
DSL
The 'gateway' box runs RedHAt 7.1 kerne 2.4.7, and
iptables 1.2.2
This 'gateway' box is my default gateway for the other
boxes on my network.
Following the IP MASQ HOWTO , I created the
rudimentary rc.firewall script:
depmod -a
echo "1" > /proc/sys/net/ipv4/ip_forward
echo "1" > /proc/sys/net/ipv4/ip_dynaddr
iptables -P FORWARD DROP
iptables -t nat -A POSTROUTING -o ppp0 -j
MASQUERADE
This script does NOT give my other computers access to
the internet.
But when I run this script..
depmod -a
echo "1" > /proc/sys/net/ipv4/ip_forward
echo "1" > /proc/sys/net/ipv4/ip_dynaddr
iptables -P FORWARD ACCEPT
ALL my boxes on my network can see the internet.
Quite frankly I'm confused by the difference between
the two iptables rulesets above.
Also I know that setting my forwarding policy to
ACCEPT is insecure, but I don't
understand why (???!!!).
THanks for any help
Pete B.
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