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Tools of the Trade: The Compressed Pcap Packet Indexing Program

Prologue
The Compressed Pcap Packet Indexing Program (cppip) is a tool to enable extremely fast extraction of packets from a compressed pcap file. This tool is intended for security and network folk who work with large pcap files. This article provides a complete discussion of the tool and is split into two parts. The first part, intended for end-users, will explain in detail how to build and use the tool. The second part, intended for C programmers, covers cppip’s inner workings.

Introduction
Cppip is a command line utility designed to make packet extraction from large pcap files extremely fast — without having to uncompress the entire file. It relies on pcap files that have been compressed using the freely available bgzip, a backward compatible gzip utility that boasts a special additive — the ability to quickly and cheaply uncompress specific regions of the file on the fly. You will find cppip quite useful if you work with large pcap files and have the need to extract one or more packets for subsequent inspection. As you’ll see, preparing your pcap files for use with cppip is a two step process of compressing the pcap file with bgzip and then indexing it with cppip. But before you can use cppip, you first have to install it. Read More »

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Student project collaboration with NC State University

It was about a year ago that Dr. Yannis Viniotis, Professor of the Electrical & Computer Engineering (ECE) department at North Carolina State University (NCSU), met with senior Cisco Engineers and agreed to collaborate on several small, hands-on projects with Cisco Engineers and NCSU students.

The NCSU ECE department partners with the industry as part of their Senior Design Project Program, where various vendors serve as sponsors and offer several projects for NCSU students to complete. That is also how the Cisco-NCSU collaboration started. Students get to work on real networking industry problems guided by engineers that already work in the industry. The students gain experience that can be later used in their professional lives. The Cisco engineers get to work with future engineers, mentoring and preparing them for their professional lives and solving some real world technical challenges. It is fun and educational for both sides.

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