Please Check Filters - BOGON Filtering IP Space

David Barak thegameiam at
Thu Jan 20 15:29:36 UTC 2005

--- Suresh Ramasubramanian <ops.lists at>

> David Barak <thegameiam at> wrote:
> >
> > While it says that bogon filters change, and
> provides
> > a URL to check it, what percentage of folks who
> would
> > use a feature like "autosecure" would ever update
> > their filters?  
> >
> What do they do to update that bogon list anyway -
> push a new IOS image?

That's a mighty fine question: the link I referenced
is the most recent I was able to find, and its list of
bogons is thoroughly out-of-date.  In the interest of
long-term reachability, I would call on Cisco to
remove the IANA-UNASSIGNED blocks from the autosecure

This will only get worse: consider how bad the GWF
problem is now with the antivirus-response-spam...

David Barak
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