Great Circle Associates Firewalls
(November 1993)
 

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Subject: Re: IP source routing
From: gt6468c @ prism . gatech . edu (Christopher Klaus)
Date: Tue, 23 Nov 1993 01:23:59 -0500 (EST)
To: pmetzger @ lehman . com
Cc: firewalls @ greatcircle . com
In-reply-to: <9311230142 . AA23809 @ snark . lehman . com> from "Perry E. Metzger" at Nov 22, 93 08:42:11 pm

> > Is this a no-brainer, and one should definitely turn it OFF, or is the only
> > security problem that another host can masquerade in pings or traceroutes?
> 
> Turn it off on your firewall. Pass no source routed packets, period,
> or you might find all sorts of very evil attacks being
> perpetrated. Indeed, turn it off anywhere you can -- internally if you
> can manage it.

I am wondering if there is a test to remotely see if IP Forwarding is
turned on a host?  Like if I admin a large network and there are
several nets within mine in different departments, and I want to see
if a particular machine has IP Forwarding, I am wondering would there
be a good way to remotely bounce a packet that would check for ip-forwarding
or not?



-- 
Christopher William Klaus
Internet: gt6468c @
 prism .
 gatech .
 edu coup @
 gnu .
 ai .
 mit .
 edu cklaus @
 hotsun .
 nersc .
 gov
26468 GaTech Station, Atlanta Georgia, 30332   (404)-206-1513




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