Traceroute from any cisco device will always then be the UDP type, for lab 
purposes?

 

 

From: Bruno [mailto:[email protected]] 
Sent: 19 January 2011 08:34 PM
To: Johan Bornman
Cc: OSL Security
Subject: Re: [OSL | CCIE_Security] Object-Groups

 

We have two types of traceroute. The one performed using ICMP and the one with 
UDP

Windows is the guy who uses the ICMP messages for traceroute while UNIX in 
general does it by UDP

 

The solution which covers unreachable and time-exceed is for UDP type.

Who starts the traceroute, does it on the UDP range from 33434-33464. The 
response comes in format of unreachable / time-exceed

 

 

On Wed, Jan 19, 2011 at 2:43 PM, Johan Bornman <[email protected]> wrote:

Hi,

 

The task asks to allow traceroute. It’s done in an object-group. The solution 
from the DSG:

object-group icmp-type TRACEROUTE

     icmp-object unreachable

     icmp-object time-exceeded

 

The solution above works great, however when doing a ? I have the following 
options:

ASA/ASA1a(config-icmp)# icmp-object ?

<0-255>               Enter ICMP type number (0 - 255)

  alternate-address

  conversion-error

  echo

  echo-reply

  information-reply

  information-request

  mask-reply

  mask-request

  mobile-redirect

  parameter-problem

  redirect

  router-advertisement

  router-solicitation

  source-quench

  time-exceeded

  timestamp-reply

  timestamp-request

  traceroute

  unreachable

 

My question is about the traceroute option, will it have the same result if 
used or does it have another purpose?

 

Thanks

 

Johan

 


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-- 
Bruno Fagioli (by Jaunty Jackalope)
Cisco Security Professional

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