does NATd _prevent_ use of stateful ipfw rules w/ keep-state?
rizzo at icir.org
Wed Jun 2 15:41:42 PDT 2004
On Wed, Jun 02, 2004 at 03:33:58PM -0700, OpenMacNews wrote:
> In continued digging for some guidance w.r.t. my earlier post, I came across the following list comment ...
> > The real show stopper is ipfw with stateful rules using the 'keep state'
> > option does not work when used with the divert/nated legacy sub-routine.
> > What this means is ipfw with stateful rules can only be used if
> > 'user ppp -nat' is how you connect to the public internet.
> Is this in fact true?
> If using NATd, am I relegated to a _static_ ruleset, w/ no ability to use stateful rules?
just about every sentence above is false.
nothing prevents you from using stateful ipfw rules with natd,
_but_ you must understand very well the packet's flow and how
addresses are transformed or you won't get what you want.
personally i see almost always only disadvantages (basically, it is much
easier to screw up your configuration) in using both because nat is
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