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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Security gain from NAT (was: Re: Cool IPv6 Stuff)
Owen DeLong <[email protected]> writes: > There's no security gain from not having real IPs on machines. > Any belief that there is results from a lack of understanding. This is one of those assertions that gets repeated so often people are liable to start believing it's true :-). *No* security gain? No protection against port scans from Bucharest? No protection for a machine that is used in practice only on the local, office LAN? Or to access a single, corporate Web site? Shall I do the experiment again where I set up a Linux box at an RFC1918 address, behind a NAT device, publish the root password of the Linux box and its RFC1918 address, and invite all comers to prove me wrong by showing evidence that they've successfully logged into the Linux box? When I last did this, I got a handful of emails, some quite snide, suggesting I was some combination of ignorant, stupid, and reckless; the Linux box for some reason remained unmolested. Jim Shankland
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