intermediate·20 min·Kostenpflichtig
Permit One Service, Not One Host
Narrow a host-level permit down to the one service it was meant to allow.
Szenario
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.
Lernziele
- acl
- nftables
- port filtering
- least privilege
Topologie und Konfiguration
Diese Umgebung enthält 4 Geräte (3 Hosts, 1 Router). Sie konfigurieren und beheben Fehler bei den oben aufgeführten Networking-Fähigkeiten.
Lehrplanthemen
Prüfungsziele
- ccna-200-301 · Ziel 5.6: Configure and verify access control lists
- comptia-network-plus-n10-009 · Ziel 4.3: Given a scenario, apply network security features, defense techniques, and solutions