[NTLUG:Discuss] Where's the best place to find answers about Linux?

[Bob Byron]

And, is there a way to descriminate specific machines using their MAC
address?

Bob

----- Original Message -----
From: "George Lass" <George.Lass at osc.com>
To: <discuss at ntlug.org>
Sent: Tuesday, September 25, 2001 5:38 PM
Subject: Re: [NTLUG:Discuss] Where's the best place to find answers about
Linux?


> Here is how I route incoming VNC requests thru my firewall:
>
> # VNC: Route incoming eth0 at port 5900, to 192.168.1.4:5900
> iptables -A PREROUTING -t nat -p tcp -i eth0 --dport 5900 -j DNAT --to
> 192.168.1.4:5900
>
> NOTE: I am routing ALL requests incoming from eth0 to my firewall'ed
> IP 192.168.1.4  I'm sure that iptables will allow you to specify an
> input IP address rather than just the interface itself.
>
> George
>
> Bob Byron wrote:
> >
> > I have a few specific questions on Linux and I am wondering where
> > would be the best place to ask them.  Does anyone have some "best"
> > sites and newsgroups that like to use for Linux?
> >
> > My questions are:
> >
> > 1) What is the best way to track byte usage of an IP address when
> > using Linux as a NAT firewall?
> > I want to be able to track everyone behind the firewall.
> >
> > 2) Even though I am using NAT on the firewall, there are occasions
> > when I want to direct all traffic destined for a specific address to a
> > specific machine behind the firewall.  I am using iptables (kernal
> > 2.4).  In other words, I have a machine sitting on my desk.  Even
> > though this machine has a private non routable (192.168.*.*) IP
> > address, I want users outside to see this machine.  I have a bank of
> > 10 IP addresses, of which the firewall is taking up only one.  I want
> > the firewall to route any traffic destined for the second of the 10 IP
> > addresses to the machine on my desk.  Any ideas?  Where's the best
> > place to ask?
> >
> > Thank You,
> > Bob Byron
> >
> _______________________________________________
> http://www.ntlug.org/mailman/listinfo/discuss