Hi guys, I've been using iptables and some of the modules it comes with for a while now but only recently as I stumbled into a big NAT444 setup, did I reach the point at which I'd like to find an answer to a theoretical question. I wanted to ask: If I have a rule that says: iptables -t nat -A POSTROUTING -o eth0 -s 192.168.0.0/16 -j SNAT --to 20.20.20.1-20.20.20.22.254 Then how are the IPs from the private pool distributed to the ones from the public pool in the two following cases: - with persistent - with random Is it a simple mathematical thing like: if private pool has X IPs ( 65536 in this case) and public Pool (Y) has let's say 766 IPs in theory => X / Y = aprox 85 private IPs per public IP and then: - 192.168.0.0-84 => 20.20.20.1 - 192.168.0.85-169 => 20.20.20.2 and so on ? or does this depend on the number of IPs which are online and the algorithm is a bit more complex ? Also, what happens in case random is being used to the same algorithm ? Hope I'm not troubling you too much with theory related questions. Thanks, Mihai -- To unsubscribe from this list: send the line "unsubscribe netfilter" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
