BCP blocking list for edge networks? (was: ingress SMTP)
Jay R. Ashworth
jra at baylink.com
Wed Sep 3 21:27:00 CDT 2008
Ok, mine is actualy even edgier than that; no transit at all, to
paraphrase Steeley Dan.
But does anyone have a pointer to a good set of ports to block in each
direction through my Shorewall DNAT setup, preferably annotated?
On reflection, that's actually only outbound; the necessity to set up
inbound DNAT manually makes it a default-deny environment, which is one
of the reasons that some people like NAT as a component of an edge
Jay R. Ashworth Baylink jra at baylink.com
Designer The Things I Think RFC 2100
Ashworth & Associates http://baylink.pitas.com '87 e24
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