Re: Ingress filtering

["Mikhail Romanenko" <mikhail@angg.ru>]

----- Original Message -----
From: Pedro Corte-Real <typo@netcabo.pt>
To: <debian-firewall@lists.debian.org>
Sent: Monday, September 17, 2001 6:34 AM
Subject: Re: Ingress filtering


> On Monday 17 September 2001 01:17, Jim Breton wrote:
> > On Mon, Sep 17, 2001 at 12:50:26AM +0100, Pedro Corte-Real wrote:
> > > But how do I translate this to net/num format?
> >
> > http://jodies.de/ipcalc
>
>
> I used that tool and confirmed that two of the networks are 192.168.0.0/16
> and 10.0.0.0/8. But the third one I thought was 172.16.0.0/11 but this
> resolves to 172.0.0.1-172.31.255.254 instead of 172.16.0.1-172.31.255.254.
>
> What did I do wrong?

172.16.0.0/12

>
> Is this kind of filtering right to begin with?
>

I've been using this kind of filtering for more than a year and haven't had
any problem
which had something to do with it so far. Of course, I'm not a guru in the
subject :)

Mikhail.