From a4472c6ffe5824328424e130b5746f3de606bae7 Mon Sep 17 00:00:00 2001
From: Samuel Philipp <mail@sp-codes.de>
Date: Sat, 20 Feb 2021 13:34:31 +0000
Subject: [PATCH] Add 'use-fail2ban.md'

---
 use-fail2ban.md | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 use-fail2ban.md

diff --git a/use-fail2ban.md b/use-fail2ban.md
new file mode 100644
index 0000000..45c2fc1
--- /dev/null
+++ b/use-fail2ban.md
@@ -0,0 +1,28 @@
+# Use Fail2ban
+
+## Installation
+
+```
+apt install fail2ban
+```
+
+## Configuration
+
+Add the following to `/etc/fail2ban/jail.d/defaults-debian.local`:
+
+```
+[DEFAULT]
+# in seconds
+bantime = 3600
+maxretry = 3
+backend  = auto
+
+[sshd]
+enabled = true
+filter  = sshd
+backend = systemd
+```
+
+## Apply Changes
+
+Run `service fail2ban restart` to activate the changes.