On Thu, 2002-09-05 at 18:06, Kevin - KD Micro Software wrote:
> I would like port 8181 on my Red Hat box (7.2, kernel 2.4.9-34, let's say ip
> is 1.1.1.1 (example only)) to be forwarded to port 80 on internal machine IP
> 1.1.1.2. I understand that machines on the internal network (eth0) would not
> be able to make use of this, but as long as it works from the net connection
> (ppp0) then that is ok. That's all I need. But, of course, if there is a way
> where this would work for both then thats even better.

You can use xinetd to do the port forward in userspace, which will work
for all nets, even when ppp0's IP address changes (making it much
simpler than iptables)

cat > /etc/xinetd.d/8181 <<EOF
service 8181
{
        disable = no
        socket_type     = stream
        protocol        = tcp
        user            = nobody
        wait            = no
        port            = 8181
        redirect   = 1.1.1.2  80
}
EOF




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