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Detecting packet injection: a guide to observing packet spoofing by ISPs. Introduction Certain Internet service providers have begun to interfere with their users' communications by injecting forged or spoofed packets - data that appears to come from the other end but was actually generated by an Internet service provider (ISP) in the middle. This spoofing is one means (although not the only means) of blocking, jamming, or degrading users' ability to use particular applications, services, or protocols. One important means of holding ISPs accountable for this interference is the ability of some subscribers to detect and document it reliably. We have to learn what ISPs are doing before we can try to do something about it. Internet users can often detect interference by comparing data sent at one end with data received at the other end of a connection. Requirements Making use of these techniques requires some general understanding of Internet technology and some technical expertise.

Each party participating in the experiment must have all of the following: Theory. Community Government Document Review System. Scapy. Security Power Tools was out in August 2007.


I wrote a complete chapter on Scapy Scapy trainings at CanSecWest, EuSecWest, PacSec. NEXT SESSION: CanSecWest march 7th and 8th, 2011 I can give trainings on many subjects (Scapy, networks, shellcoding, exploit writing, etc.). Contact me directly: phil@secdev.org About Scapy What is Scapy Scapy is a powerful interactive packet manipulation program. What makes scapy different from most other networking tools First, with most other tools, you won't build someting the author did not imagine. Second, they usually confuse decoding and interpreting. Third, even programs which only decode do not give you all the information they received. Scapy tries to overcome those problems. In fact, it's like building a new tool each time, but instead of dealing with a hundred line C program, you only write 2 lines of Scapy. After a probe (scan, traceroute, etc.) Scapy Project Scapy < 2.x needs Python 2.4 or upcomming versions. Download Related projects Mailing-list.