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Network Security Pen-Test
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Re: Layer 2 Trace

Subject: Re: Layer 2 Trace
Date: Fri, 2 Dec 2005 11:01:19 -0500
Short answer: No.

Long answer: traceroute uses ICMP ttl-expired messages to work - which has 
no equivalent in the various layer two protocols. 
The only thing similar that is possible, is with source-route-bridging on 
token ring, and you will only find out which ring numbers and bridge 
numbers you go through to reach your destination, not the name, mac 
address or other layer three addresses of the devices in between, so if 
you have access to network topology diagrams, you can figure out where 
your traffic goes, but it is of little use for network topology discovery. 
 Besides, even in a token-ring SNA environment nowadays, everyone uses 
DLSw, which masks the real path that datagrams take.
___________________________________________________
François Labrèque, CCNP
Team Leader, Network Support
IBM Global Services
Tel.:(514)-964-2150   Fax.:(514)-964-1708
flabreq@ca.ibm.com

In the future, performance will be measured by the size of your pipe!
       - Dogbert, on networking



riftman <riftman@gmail.com> 
2005-12-02 06:03

To
pen-test@securityfocus.com
cc

Subject
Layer 2 Trace






Hello,
                 I would like to know if it is possible to do like a 
traceroute
but on layer 2.
                 I need to see the equipment that is between source and 
target
machines.

                 Thanks in advance;

PS: Sorry my English, this is my first post ... be kind

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------------------------------------------------------------------------------
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Hackers are concentrating their efforts on attacking applications on your 
website. Up to 75% of cyber attacks are launched on shopping carts, forms, 
login pages, dynamic content etc. Firewalls, SSL and locked-down servers are 
futile against web application hacking. Check your website for vulnerabilities 
to SQL injection, Cross site scripting and other web attacks before hackers do! 
Download Trial at:

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