advanced·20 min·付费
The Firewall That Never Saw the Request
Replies are dropped by a firewall that never saw the request.
场景
Lowell Actuarial added a second path between its server room and the core for resilience. Since then the reporting client cannot reach the analytics server, although the server records the incoming requests and answers them. The security team confirms the return firewall is configured exactly as approved and refuses to loosen it. Restore client access without weakening the firewall.
学习目标
- asymmetric routing
- stateful firewall
- connection tracking
- troubleshooting
拓扑与配置
此环境包含 5 台设备（2 Hosts, 3 Routers）。你将配置并排查上方列出的网络技能。