Skip to contentExploitQuest
Join free
LearnVPS & Self-HostingThe Ones Who Come Back

Chapter 03 of 07 · VPS & Self-Hosting

The Ones Who Come Back

You cannot stop the internet from knocking, but you can make it expensive. A few failed logins is noise; the same address failing a hundred times is an attacker, and fail2ban reads that in the log and shuts the door on them — for an hour, and for the ones who keep coming back, for weeks.

FreeMedium
3 lessons7 quiz questionsabout 6 minup to 60 XP
Loop in progress
  1. Attack
  2. Telemetry
  3. Fix
  4. Detection
defensive beats coming
Start this chapterWatch Them Try
  1. Watch Them Trychallenge2 min
  2. Ban Themchallenge2 min
  3. The Ones Who Keep Coming Backchallenge2 min
  4. Practice quiz7 questions