Actually, that will do what he wants, but he'll have to list all addresses
that have been bound to eth0 (including any eth0:* aliased addresses).
Philip Hazel wrote:
>
> On Fri, 23 Jan 1998, Galen Hazelwood wrote:
>
> > Greetings, all.
> >
> > Consider the following situation: I have a linux box, running exim,
> > which is doing IP Masquerading and providing internet connectivity for a
> > LAN. I want to configure it so that SMTP connections coming in from
> > eth0 will be accepted, and all others (except perhaps for an ISP mailer
> > for ETRN support) rejected. I could set up a firewall rule to do this,
> > but for complex reasons (involving problems letting that one ETRN host
> > through) I don't want to do it.
> >
> > What I really need is something like "sender_device_accept = eth0",
> > since with masquerading on, there isn't any reliable way to determine
> > where any given IP address actually is. I'm pretty sure this isn't
> > possible, and I'm going to have to go back to working on that !*#@!#&
> > firewall, but I'm asking in the vague hope that somebody else has
> > already found some kind of workaround.
>
> The only thing that might help you here is the option
>
> local_interfaces
>
> which can be used to restrict the Exim daemon to listen on specific
> interfaces only, but I suspect that with masquerading etc. it won't be
> very helpful.
>
> --
> Philip Hazel University Computing Service,
> ph10@??? New Museums Site, Cambridge CB2 3QG,
> P.Hazel@??? England. Phone: +44 1223 334714
>
> --
> *** Exim information can be found at http://www.exim.org/ ***
--
*** Exim information can be found at
http://www.exim.org/ ***
