Hi Chris,
Look into a technique called firewalking. There you use ttl to find out how far
behind a firewall or other packet filter a host has been placed.
There is a nice tutorial about writing a firewalk script in just a few lines
with scapy - google firewalk + scapy to find it. That should get you started
well enough that you can modify the tool for your own purposes.
Cheers,
Chris
----- UrsprÃngliche Nachricht -----
Von: "Chris Hammer" <CHammer@fcbnm.com>
An: "pen-test@securityfocus.com" <pen-test@securityfocus.com>
Gesendet: 30.03.06 06:40
Betreff: Using TTL to Locate Hosts
Hello everyone, I had an interesting question posed to me earlier. The
question was "Could you use only the TTL of a packet to locate hosts and
verify they are up?" I know playing around with Tracert this could be
possible, or a crafted packet using HPING. Any other ideas or thoughts?
Thanks!
Chris
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protect your applications from hackers. Cenzic has the most comprehensive
solutions to meet your application security penetration testing and
vulnerability management needs. You have an option to go with a managed
service (Cenzic ClickToSecure) or an enterprise software (Cenzic Hailstorm).
Download FREE whitepaper on how a managed service can help you:
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