advanced·20 min·有料
Replies Leave the Server, But Never Reach the Client
A permitted inside service answers, but its return traffic disappears at the firewall.
シナリオ
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.
学習目標
- acl
- nftables
- stateful firewall
- connection tracking
トポロジーと設定
この環境には3台のデバイス(2 Hosts, 1 Router)が含まれます。上記のネットワーキングスキルを設定し、トラブルシューティングします。