Please Check Filters - BOGON Filtering IP Space

Christopher L. Morrow christopher.morrow at
Fri Jan 21 05:24:23 UTC 2005

On Thu, 20 Jan 2005, James Laszko wrote:

> > > Whats so bad about decent secure defaults?
> > I don't consider a configuration that disenfranchises part of the
> > internet as "decent [...] defaults." :)
> The big problem that we're experiencing here is that the big telco
> ISP's, network providers and managed service providers that should have
> something better than a 'network monkey' running their routers are
> having BOGON filtering problems.
> We diagnosed a problem getting to east cost government sites and in
> working with SAVVIS, we corrected problems in a matter of hours.  This
> has been the only positive progress we've made in unblackholing out
> network segment.  We're going on day number 4 trying to get SBC to fix
> 'managed' local government routers.

you do understand that for SBC (or anyone who manages customer devices) to
make a change:
1) the customer has to be notified of the change and given a reason for
the change
2) the customer has to agree to the change (presumably they also have to
actually be contacted.... a task of it's own at times)
3) the change has to be scheduled into a maint window
4) the procedures and maintenance changes probably have to be checked over
with the 'network monkey' (as you put it) and customer
5) change happens, for 1 customer...

Wash, rinse, repeat for the other 70,000 routers you manage for
customers... This is definitely NOT a half-rack in a colo fix. Just
contacting the customers is a feat.


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