BIND-8/9 interface bug? Or is it FreeBSD?

Jeremy Chadwick freebsd at jdc.parodius.com
Fri Apr 18 21:34:50 PDT 2003


        Ah, you're right --  I definitely skipped over the "outgoing"
        phrase in Crist's note.  My apologies.

        I'll try taking a look at the interface without the outgoing
        ipfw blocks in place, and report back.  I'm starting to wonder
        if it's NOTIFY traffic...

-- 
| Jeremy Chadwick                                   jdc at parodius.com |
| Parodius Networking                       http://www.parodius.com/ |
| UNIX Systems Administrator                  Mountain View, CA, USA |
| Making life hard for others since 1977.                            |

On Sat, Apr 19, 2003 at 12:30:55AM -0400, Barney Wolff wrote:
> On Fri, Apr 18, 2003 at 04:52:14PM -0700, Jeremy Chadwick wrote:
> >         Since when?  :-)  That wouldn't make very much sense, and
> >         would be extremely misleading for network administrators.
> >         bpf should have the highest priority, well above ipfw.
> > 
> >         I just verified that fact with a test: blocking any telnet I/O
> >         across my public interface and telnetting in from my home
> >         workstation:
> 
> You didn't listen to the answer:  bpf is closer to the driver than ipfw,
> so it will see inbound packets that ipfw will block, but not see outbound
> packets that ipfw has already blocked.
> 
> -- 
> Barney Wolff         http://www.databus.com/bwresume.pdf
> I'm available by contract or FT, in the NYC metro area or via the 'Net.


More information about the freebsd-net mailing list