advanced·20 min·Pago
Replies Leave the Server, But Never Reach the Client
A permitted inside service answers, but its return traffic disappears at the firewall.
Cenário
Dovetail Museum's outside client can start a permitted session with an inside service, but responses disappear on the way back. Unsolicited connections from the outside must remain blocked. Use the traffic direction and connection state to restore replies without opening a broad path.
Objetivos de aprendizado
- acl
- nftables
- stateful firewall
- connection tracking
Topologia e configuração
Este ambiente contém 3 dispositivos (2 Hosts, 1 Router). Você configura e resolve problemas nas habilidades de redes listadas acima.