i have the machines, one is linux box and the other is Win XP box, i want the use the linux box to share internet access using NAT, but i got some problems...

server setting:
os:redhat9
eth0:
DEVICE=eth0
BOOTPROTO=dhcp
BROADCAST=192.168.100.255
IPADDR=192.168.100.1
NETMASK=255.255.255.0
NETWORK=192.168.100.0
ONBOOT=yes

eth1:
DEVICE=eth1
BOOTPROTO=static
BROADCAST=192.168.1.255
IPADDR=192.168.1.2
NETMASK=255.255.255.0
NETWORK=192.168.1.0
ONBOOT=yes

nat setting:
iptables -F
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
iptables -A FPRWARD -d 162.168.1.0/24 -j ACCEPT
iptables -A FPRWARD -s 162.168.1.0/24 -j ACCEPT

client setting:
os:winxp pro
setting:
ip adress:192.168.1.135
subnet mask:255.255.255.0
default gateway:192.168.1.2
preferred DNS server:202.45.84.58
alternate DNS server:202.45.84.59

The problem is that my linux box can get online while my XP box cannot, but the two machines can ping each other, whats wrong with my setting, could somebody help me out...

thanks in advance

is the above then entire firewall script? what are the default policies for the FORWARD, INPUT and OUTPUT chains?

before you start though have you read NAT HOWTO section on MASQERADING?

Start there maybe and see how you go

Are you using any type of proxy?If you are using squid as a proxy you have to put the ipaddress(192.168.100.1)and port number(3128) in client.This will solve ur problem.........

hope ip_forward-ing is enabled

both the interfaces in your linux box have ips in the private address range, how on earth is it on the internet?

you want your eth1 (lan interface) to have a static address, which you have.

the xp settings look right too.

you need to enable ipforwarding as said by a previous poster, echo 1 > /proc/sys/net/ipv4/ip_forwarding (off the top of my head)

you say your, xp box cant get on the internet, is it that or is dns simply not working?

there is no problem with him getting on the internet with private ip's on both interfaces as long as he has the default gateway to a server of his isp's wich forwards/routes his trafic on the net

there is a typo there , FPRWARD instead of FORWARD

btw scientific study discovered that the human brain gets trained to only read the first and the last characters of words and deduct the rest

yeah, i know that but his intial post reads like he only has 2 boxs, one xp, one linux, and hes using the linux box as a gateway...

maybe im missing something :/