ppp(8) and inbound IP connections

[Matthias Apitz]

El día Tuesday, May 07, 2013 a las 02:17:33PM -0500, Eric van Gyzen escribió:

> > Ofc, the provider must NAT somehow my local addr behind some routable
> > valid IP addr, in our case 82.113.99.104; without this nothing would
> > come back, even when the 1st SYN was from my side; the question is, why
> > they do not manage the NAT table so any SYN to 82.113.99.104 is sent to
> > my ppp link;
> >
> > or if they do send it, and my ppp config is wrong?
> 
> Most likely, multiple customers' local addresses are NATed to the same
> routable address, so the router can't know which customer to chose for a
> new incoming connection.  De-NATing of incoming packets for existing
> sessions is done via per-connection state-tracking, which of course
> doesn't exist for a new incoming connection.

That is my understanding as well, but why they claim that they do
support incoming connections?

	matthias

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