Firewalls: Re: traceroute

Firewalls
(September 1996)

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Subject:	Re: traceroute
From:	Adrian Setton <asetton @ lightech . com . ar>
Organization:	LighTech
Date:	Fri, 06 Sep 1996 13:45:08 -0300
To:	firewalls @ GreatCircle . COM
Cc:	"James Rippas (Technology)" <jrippas @ fcmc . com>
References:	<9609060853 . ZM4508 @ alanis>
Reply-to:	asetton @ lightech . com . ar

Traceroute uses high UDP ports to High UDP ports as outgoing packets
(from the machine where you are running traceroute, packets from
ports over 32768).
The incoming packets are ICMP TTL exceeded messages (ICMP Type 11,
Code 0) from the intermidate routers and ICMP port unreachable (ICMP
Type 3, Code 3) from the final node.
At least, this is what I've seen in my latest dream ...
Regards ...
-- 
Adrian F. Setton
LighTech                        Voice:  (54-1) 420-4110
Ayacucho 563. Piso 13 Dto "A"   FAX:    (54-1) 315-1343
Buenos Aires                    e-mail: asetton @
 lightech .
 com .
 ar
Argentina                       URL:    http://www.lightech.com.ar

References:

traceroute
From: "James Rippas (Technology)" <jrippas @ fcmc . com>

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