Gateway Computers

registered hosts Informações contidas na tabela hosts.txt comando “whois” Estrutura da tabela hosts.txt /etc/networks NET : 16.0.0.0 : MILNET palavra-chave /etc/hosts HOST : 16.1.0.9 : WSL.DEC.COM : VAX : ULTRIX : TCP/IP endereços do gateway GATEWAY : 18.10.0.4, 18.26.0.138 : GW.LCS.MIT.EDU : VAX DNS - Domain Name Service (1984)  Sistema hierárquico distribuído para “resolver” nomes de hosts em endereços IP  Não depende de uma tabela única Garante que…

make possible the interconnection between computers and their peripherals. We are in the information age, where there is a great facility to collect, store, process and display a information obtained, thus allowing an integration which was never imagined. This integration is being achieved primarily through the distributed computer systems and networks, since the term "computer network" means a certain amount of interconnected stand-alone computers.Two computers are said interconnected…

encontrar rotas ótimas mais rápido que o algoritmo de Ali e Kamoun. Como resultado um artigo científico completo foi publicado no simpósio “IEEE Foundations on Computational Intelligence”. ESCOLA POLITÉCNICA DE PERNAMBUCO ii Abstract In a computer network, particulary in packet-switched networks, the routing process has a significant impact in the performance of the nets. It is desirable that a router algorithm finds a route between the source and the destination in the…

Lista de Funcionalidades Sysinternals Tabela 4.1 - Detalhamento VMs configuradas para o estudo de caso Tabela 4.2 - Linha do Tempo 31 37 47 iii LISTA DE ABREVIATURAS E SIGLAS NIST CERT National Institute of Standard and Technology Computer Emergency Response Team 2 2 2 2 4 9 15 16 16 16 19 20 20 20 20 24 24 CERT-BR Centro de Estudos,Resp. Trat. de Inc. Segurança no Brasil TI ERP RAID IDS IP TCP MAC USB BSD EXT FAT NTFS MFT ASCII Tecnologia da Informação Enterprise…

década de 1990 e essa explosão nas comunicações não teria sido possível sem o avanço progressivo das redes de computadores. Classificação Ver artigo principal: Tipos de Rede * Segundo a Arquitetura de Rede: * Arcnet (Attached Resource Computer Network) * Ethernet * Token ring * FDDI (Fiber Distributed Data Interface) * ISDN (Integrated Service Digital Network) * Frame Relay * ATM (Asynchronous Transfer Mode) * X.25 *…

course of Computer Science, implemented in a small trading company in the industry of building materials. Using all the knowledge acquired in the course, since the physical mounting of the enterprise network to the configuration of your network peripherals, and the use of information systems in conjunction with the officials and stewards of the system and aid the creation of logos and use of software to run the company. In addition to aiding employees with respect to the effective use of…

Presidente Epitácio, 2012. ABSTRACT This work was possible to observe how the technology has evolved today, what was once only possible through a simple phone today is practiced by voip technology that lets you connect a phone to your computer or your Internet connection and perform phone calls. There are all using this technology, but there are plans for that in the future most of the population does not use VoIP and conventional telephony. The VoIP…

or ARP on 802.4 networks will interoperate, (3) all equipment using IP or ARP on 802.5 networks will interoperate. Of course, the goal of IP is interoperability between computers attached to different networks, when those networks are interconnected via an IP gateway [8]. The use of IEEE 802.1 compatible Transparent Bridges to allow interoperability across different networks is not fully described pending completion of that standard.…

............................. 38 3.3.6 SIP – Protocolo de Inicialização da Seção ....................................... 41 3.3.8 Comparação entre os protocolos H.323 e SIP ..................................... 44 3.3.9 Protocolos de Controle de Gateway..................................................... 45 4 VOIP EM SOFTWARE LIVRE ....................................................................... 49 4.1 Asterisk .............................................................................

and an increase in users of computer networks. It was necessary to improve security in the network, especially regarding the media and internet data entry that is a major cause of virus attacks. Amid so many tools available to protect information, which would be most effective data security of the computer network of the Board of Education of Ourinhos? This paper seeks to analyze which of the main security tools used in order to protect the information of the computer network would be…