[TriLUG] Iptables help

[Aaron S. Joyner]

Greg Kuhn wrote:

>Hello all, 
>      I have what is probably a simple question, I just don't have the answer. Here is the situation, I am currently enrolled in wake techs high performance computing program, and this semester I am taking their linux security class among others. The instructor wants as the last part of our current lab to do the following:
>
>from machine 1 ping machine 2 and have the ping forward to machine 3, so it looks like the ping is actually coming from machine 2.
>
>I set up machine three to log the activity, when i ping machine 3 directly from 1 or 2 it logs it, but my forwarding/masqing rules don't seem to be working, when I try to ping 3 thru 2 from 1.
>
>I tried using the rules from  my server at home but something is missing.
>
>So if you could please send the iptable rules needed to accomplish this task.
>
>Thanks, Greg
>  
>
I would suggest that you might get more constructive feedback by posting 
the things you've _tried_, and asking particularly what it is wrong with 
them.  I'm sure any of us would be glad to help you learn, but I bet 
most of us are hesitant to "do your homework for you", in a sense.  :)

Aaron J.