Permit One Service, Not One Host

Cenário

A security review found that the web servers can open any port on the application server, because the rule permitting the two to talk was written by address at a time when only one service was running. The application server now also hosts the database. Restrict the web tier to the application port only, without disturbing the administrators who legitimately need database access.

Objetivos de aprendizado

• acl
• nftables
• port filtering
• least privilege

Topologia e configuração

Este ambiente contém 4 dispositivos (3 Hosts, 1 Router). Você configura e resolve problemas nas habilidades de redes listadas acima.

Tópicos do currículo

• Network Security and Access Control / Filtering by Service

Objetivos de certificação

• ccna-200-301 · Objetivo 5.6: Configure and verify access control lists
• comptia-network-plus-n10-009 · Objetivo 4.3: Given a scenario, apply network security features, defense techniques, and solutions