IPTABLES: How Packets Traverse The Filters
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what do youi mean "even if"? that's the only place that's relevant (save for loopback...) where else is you traffic going to come from? you can't distinguish between where a packet came from, that's illogical at that low low level. if you wish to distinguish between local and remote ip's then that's up to you to configure the iptables rules to suit.
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before the routing decision the rules in the prerouting chain are applied (hence the name), which gives you direct influence on the routing decision as you can manipulate the packets before the routing decision is made.
Maybe the author intentionally disregarded the nat table. Other than that, the quotation is correct. |
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