NAT and netfilter (appology, thanks, and correction)

[Trever Adams]

David Miller, thank you for the patch.  I will be recompiling some time 
tomorrow and testing (I am getting tired and am not sure I would do a decent 
test job tonight).

NAT does work.  But the problem with the missing /proc file still persists.  
My problem was I didnt have an appropriate rule for the return forwarding (I 
was droping the return data).  My worry is since my box will now forward to 
the private network, how do I keep people from doing source routing and 
routing packets onto my machine... is this really a security risk? How can I 
avoid it (my rules are as they were in the previous script)?

Thank you again David,  I appreciate the help (and honestly the tremendous 
work you and others have done),
Trever Adams
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