Questo libro descrive TrixBox sia come sistema telefonico tradizionale che come sistema di comunicazione attraverso Internet. Il libro affronta le argomentazioni trattate facendo uso di uno stile semplice, in modo da permettere al lettore di comprendere i concetti passo dopo passo. Inizia introducendo importanti concetti prima di guidare l'utente attraverso la pianificazione, progettazione e gestione del proprio sistema telefonico. TrixBox e un sistema telefonico basato sul popolare software open-source Asterisk PBX (Private Branch eXchange). Esso permette sia al singolo individuo che ad una azienda, di configurare un sistema telefonico per reti tradizionali cosi come sistemi basati su Internet o VoIP (Voice over Internet Protocol). SugarCRM e uno strumento gia integrato con Asterisk, quindi esso e stato incorporato in TrixBox in modo da incrementare la flessibilita del sistema. Il presente libro fornisce al lettore una guida per la configurazione e la gestione di questo sistema telefonico. Il libro inizia introducendo i concetti della telefonia prima di descrivere in dettaglio come pianificare un sistema telefonico e come muoversi per installare, configurare e gestire un PBX, che abbia funzionalita per la comunicazione a pacchetto. Inoltre fornisce alcuni esempi che si riferiscono ad un sistema telefonico ben strutturato, accompagnati da fogli elettronici che servono per aiutare il lettore nella costruzione di una infrastruttura telefonica stabile.

This book is an easy-to-read guide to using IPCop in a variety of different roles within the network. The book is written in a very friendly style that makes this complex topic easy and a joy to read. It first covers basic IPCop concepts, then moves to introduce basic IPCop configurations, before covering advanced uses of IPCop. This book is for both experienced and new IPCop users. IPCop is a powerful, open source, Linux based firewall distribution for primarily Small Office Or Home (SOHO) networks, although it can be used in larger networks. It provides most of the features that you would expect a modern firewall to have, and what is most important is that it sets this all up for you in a highly automated and simplified way. This book is an easy introduction to this popular application. After introducing and explaining the foundations of firewalling and networking and why they're important, the book moves on to cover using IPCop, from installing it, through configuring it, to more advanced features, such as configuring IPCop to work as an IDS, VPN and using it for bandwidth management. While providing necessary theoretical background, the book takes a practical approach, presenting sample configurations for home users, small businesses, and large businesses. The book contains plenty of illustrative examples. Chapter 1 briefly introduces some firewall and networking concepts. The chapter introduces the roles of several common networking devices and explains how firewalls fit into this. Chapter 2 introduces the IPCop package itself, discussing how IPCop's red/orange/blue/green interfaces fit into a network topology. It then covers the configuration of IPCop in other common roles, such as those of a web proxy, DHCP, DNS, time, and VPN server. Chapter 3 covers three sample scenarios where we learn how to deploy IPCop, how IPCop interfaces connect to each other and to the network as a whole. Chapter 4 covers installing IPCop. It outlines the system configuration required to run IPCop, and explains the configuration required to get IPCop up and running. In Chapter 5, we will learn how to employ the various tools IPCop provides us with to administrate, operate, troubleshoot, and monitor our IPCop firewall Chapter 6 starts off with explaining the need for an IDS in our system and then goes on to explain how to use the SNORT IDS with IPCop. Chapter 7 introduces the VPN concept and explains how to set up an IPSec VPN configuration for a system. Special focus is laid on configuring the blue zone - a secured wireless network augmenting the security of a wireless segment, even one already using WEP or WPA. Chapter 8 demonstrates how to manage bandwidth using IPCop making use of traffic shaping techniques and cache management. The chapter also covers the configuration of the Squid web proxy and caching system. Chapter 9 focuses on the vast range of add-ons available to configure IPCop to suit our needs. We see how to install add-ons and then learn more about common add-ons like SquidGuard, Enhanced Filtering, Blue Access, LogSend, and CopFilter. Chapter 10 covers IPCop security risks, patch management and some security and auditing tools and tests. Chapter 11 outlines the support IPCop users have in the form of mailing lists and IRC. The book is suitable for anyone interested in securing their networks with IPCop - from those new to networking and firewalls, to networking and IT Professionals with previous experience of IPCop. No knowledge of Linux or IPCop is required.

TrixBox is a telephone system based on the popular open source Asterisk PBX (Private Branch eXchange) Software. TrixBox allows an individual or organization to setup a telephone system with traditional telephone networks as well as Internet based telephony or VoIP (Voice over Internet Protocol). SugarCRM is already integrated with Asterisk, hence it has been bundled with Trixbox too to increase flexibility. This book guides the reader in the setup of this system and how to manage the telephone system. The book begins by introducing telephony concepts before detailing how to plan a telephone system and moving on to the installation, configuration, and management of a feature packed PBX. This book provides examples of a well laid out telephone system with accompanying spreadsheets to aid the reader in building stable telephony infrastructure.

O Asterisk e uma infra-estrutura gratuita, de codigo livre para a construcao de sistemas de telefonia completos. Sendo flexivel e poderoso, o Asterisk e naturalmente um sistema complexo. Para entender e utilizar o Asterisk, voce precisa de documentacao clara e acessivel - e e isso que este livro oferece. Escrito de maneira amigavel, este tutorial guia voce passo a passo pelo processo de compreensao de suas necessidades na area de telefonia. E, entao, mostra como voce deve instalar e configurar o Asterisk para montar um sistema que atenda a estas necessidades. Caso voce esteja construindo um sistema de telefonia para sua casa ou para sua empresa, este livro e tudo que voce precisa. O que voce aprendera neste livro Este livro leva voce desde a instalacao e configuracao do Asterisk para o uso de suas varias funcionalidades avancadas - ajudando-o na construcao de sistemas de telefonia ricos em funcionalidades. Com este livro, voce aprendera a: . Instalar e configurar, o Asterisk . Criar um plano de discagem que satisfaca as suas necessidades . Construir um sistema de telefonia completo . Monitorar, gravar, e guardar registros de chamadas . Instalar e utilizar o Asterisk@Home . Fazer backup, garantir a seguranca e manter o Asterisk . Utilizar configuracoes de exemplo para diversos requisitos diferentes Para quem este livro foi escrito Este livro visa a todos que estejam interessados em construir um poderoso sistema de telefonia usando uma aplicacao gratuita e de codigo livre, o Asterisk, sem a necessidade de gastar alguns milhares de dolares comprando um sistema comercial, muitas vezes bem menos flexivel. Este livro e adequado para os iniciantes e novatos em Asterisk e telefonia. Experiencia em Linux ou telefonia e bem-vinda, mas nao obrigatoria.