Dear Sir,
I am using RHEL 5 server. all the clients are loaded in windows xp.

In RHEL5 ---> Eth 0 : Puplic IP, Eth 1 : Private (Local) IP

I have configure NAT

iptables - t nat -A POSTROUTING -o eth0 -j SNAT --to "public ip".

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

Then I set the client pc gateway and dns is linux server ip(eht1).

Its working fine.
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In another lab

We are using Windowxp machine as a internet server.

In Win XP ---> Eth 0 : Puplic IP, Eth 1 : Private (Local) IP

How to configure nat.

How to browse the client with out proxy.

Please help

You're asking how to do NAT routing on an XP Machine? This is nothing at all to do with Linux, right? Is that ICS? I used to use about a decade ago, maybe you want somethign like that if it still exists.

Note that you shouldn't use SNAT a.b.c.d on that redhat example but MASQUERADE as it's the interface address itself you're natting to, not another arbitrary address.

Sir,

Thanks for your reply. It is possible to configure nat in xp machine

yes, it is.

How to possible sir. Please explain

On a Linux help forum? As above, I *think* it's ICS you'd need. I'm sure google has much more more information about this, and can be found much quicker...

Short and sweet: http://tinyurl.com/3xx2nu9