Info, examples, about using Ip Firewall (ip_fw) w/RTEMS

Joel Sherrill joel at
Wed Apr 10 21:24:08 UTC 2002

Jay Monkman wrote:
> On Tue, Apr 09, 2002 at 11:04:34PM -0500, Jim Gullett wrote:
> > Does anyone know of attainable info, howtos, or examples about using
> > Ip_Firewall (ip_fw) and/or Ip_Divert w/RTEMS. There is code in the ip
> > source that appears to be for this purpose. We are using RTEMS to
> > implement a firewall/router/dhcp server.
> We're doing something similar, and just starting to try to set
> everythin go. I'll try to keep you informed about our successes
> and (hopefully not) failures.

If someone does have instructions for using RTEMS as a router, bridge,
etc, etc.  Please pass them along so we can merge them into the 
networking manual.

I do know of one user who merged IPSEC capabilities from OpenBSD and
built a secure router.  As I recall, the router portion was simply
a matter of properly configuring multiple network interfaces.
Someone else will have to comment on filtering more than that.

> --
> Jay Monkman         The truth knocks on the door and you say "Go away, I'm
> monkman at    looking for the truth," and so it goes away. Puzzling.
>                      - from _Zen_and_the_Art_of_Motorcycle_Maintenance_

Joel Sherrill, Ph.D.             Director of Research & Development
joel at                 On-Line Applications Research
Ask me about RTEMS: a free RTOS  Huntsville AL 35805
Support Available                (256) 722-9985

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