[comp.mail.misc] Hiding machines in a LAN

tron@Veritas.COM (Ronald S. Karr) (05/31/91)

In article <1064@aega84.UUCP> lh@aega84.UUCP (L. Hirschbiegel) writes:
>My dumb problem is: how do I hide a uucp connection within a LAN from
>the outside world? I'm running smail3.1 (patchlevel 16) on our
>mail gateway.

Smail doesn't remove information from messages.  However, you can
setup smail so that the workstations won't generate it (this may not
work in patchlevel 16, though--please get a newer version).  What
I do at veritas is to transfer all mail internally as "local" mail.
That is, the company-internal UUCP and SMTP mail transports all
have the "local" flag set, thus transfering the message to the
receiving site as if it came from a local user.

When a message is sent out of the company, a different transport is
used which does not have the "local" flag set, and which thus tacks on
all of the domain information appropriate to the gateway.

Doing this requires that local addresses be resolved consistently
throughout the area where transfers are done with "local" set.

Indeed, what I do here at veritas for the local user problem is to
setup all machines other than the gateway to send mail to almost
all users to the gateway (this can be done by dropping the user
director from the directors file).  Users can then setup whatever
forwarding information they want on the gateway, using real-user
addresses, which prevents automatic forwarding.
-- 
	tron |-<=>-|		ARPAnet:  veritas!tron@apple.com
      tron@veritas.com		UUCPnet:  {amdahl,apple,pyramid}!veritas!tron

lh@aega84.UUCP (L. Hirschbiegel) (06/03/91)

Thanks to all who answered to my question about hiding machines in a LAN!
[ the difference between usenet and rtfm is that you really GET answers
  that solve your problem from usenet people... :-) ]

L. Hirschbiegel
-- 
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L. Hirschbiegel, AEG Produktionsautomatisierung, Frankfurt (Germany)
unido!aega84!lh                                      -49-69-66414316
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