Great Circle Associates Firewalls
(March 1994)
 

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Subject: Re: IP_FORWARDING
From: jim @ Tadpole . COM (Jim Thompson)
Date: Mon, 7 Mar 1994 11:35:01 +0600
To: db @ whitney . sunbim . be, firewalls @ GreatCircle . COM
Cc: verber @ parc . xerox . com

> From: db @
 whitney .
 sunbim .
 be (Danny Backx)
> 
> Mark Verber <verber @
 parc .
 xerox .
 com> wrote :
> 
> > Yes, setting IPFORWARDING properly in options or changing ip_forwarding
> > with adb works just as well as editing ip_proto.c.  Once again, my primary
> > warning is that  source routing happens whether you have IPfowarding on
> > or off.

SunOS 4.1.3 only has the problem if you consider it a problem
that folks make it look like an attack is comming from your host,
or if you have applications that are bound to one side of a host
with IP_FORWARDING off, (like iftp/itelnet)...  You can't source-route
through the machine, from one interface to the other in any case.

Jim

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