Security Operations

Hands-on defense on a server that is actually running. Rotate secrets left in history, lock the host down with sudo, a firewall, AppArmor and auto-updates, and pick the vulnerabilities that are truly reachable from scanner output, seeing the patch and the exception record through. Every lab first shows the harm a misconfiguration causes, then checks that the fix holds and the service still runs.

코스

• A deleted token still opens the door from history — Rotate leaked secrets, encrypt them at rest, and leave fewer behind
• Lock the server down from scratch — Narrow the host with sudo, a firewall, AppArmor and auto-updates
• The scanner handed you forty red lines — Prioritize by reachability, fix, rescan, and record exceptions with evidence