{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

8-Seguranca - Segurana de Rede c Redes de Computadores 8...

Info icon This preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
Seguran¸ca de Rede Redes de Computadores 8. Seguran¸ca de Rede Elvio Leonardo DIN/CTC/UEM 2008 Elvio Leonardo Redes de Computadores
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Seguran¸ca de Rede Firewall Firewall : o que ´ e? I Dispositivo que permite conectividade segura entre redes (interna e externa) com v´ arios graus de confiabilidade I Utilizado para implementar e impor as regras de comunica¸c˜ ao e seguran¸ca da rede I Oferece um ponto de acesso controlado Elvio Leonardo Redes de Computadores
Image of page 2
Seguran¸ca de Rede Firewall Firewall I Firewalls podem: I Restringir os tr´ afegos de entrada e sa´ ıda por endere¸co IP, n´umero de porta, ou usu´ ario I Impedir o trˆ ansito de pacotes inv´ alidos I Coletar informa¸ oes sobre o tr´ afego I Firewalls ao podem: I Atuar sobre o tr´ afego que n˜ ao passa por ele (exemplo, tr´ afego interno) I Proteger quando configurados incorretamente I Proteger contra v´ ırus I Proteger contra amea¸cas inesperadas (novas) I Firewall Interno I Prote¸c˜ ao diferenciada de partes da rede interna Elvio Leonardo Redes de Computadores
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Seguran¸ca de Rede Firewall Firewall I Duas pol´ ıtica de acesso: I Permite todos os servi¸cos exceto os bloqueados I Proibe todos os servi¸cos exceto os permitidos I Primeira pol´ ıtica ´ e menos segura e pode permitir inadvertidamente acesso para servi¸cos perigosos I Segunda pol´ ıtica ´ e mais segura mas pode causar impacto/desconforto aos usu´ arios I Administrador deve encontrar a mistura apropriada que permita m´ axima seguran¸ca e m´ ınima interferˆ encia para o usu´ ario Elvio Leonardo Redes de Computadores
Image of page 4
Seguran¸ca de Rede Firewall
Image of page 5

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern