[22002] in North American Network Operators' Group
Re: identify hostname
daemon@ATHENA.MIT.EDU (Jon Zeeff)
Tue Dec 1 16:15:01 1998
To: pete@kruckenberg.com (Pete Kruckenberg)
Date: Tue, 1 Dec 1998 15:41:18 -0500 (EST)
Cc: nanog@merit.edu
In-Reply-To: <Pine.BSI.3.95.981201121946.16658D-100000@inquo.net> from "Pete Kruckenberg" at Dec 1, 98 12:29:15 pm
From: jzeeff@verio.net (Jon Zeeff)
Reply-To: jon@zeeff.com
Who is willing to write a tool to do broadcast address discovery and
access-list generation? Ideally with a config file that would allow
one to avoid serious self smurfing (ie, ranges to check and patterns
to assume are broadcasts without trying them).
> Filtering broadcast addresses is pretty ugly. Consider that a single Class
> C broken down into /30's can have 64 broadcast addresses. Maybe if it was
> just filtering your own assigned subnets, it would be possible, but this
> also applies to customer-subnetted broadcast addresses, so you'd have to
> coordinate your filter with every one of your customers, every time they
> change subnets. Not impossible, but pretty close.
