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Add 'use-fail2ban.md'

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Samuel Philipp 2021-02-20 13:34:31 +00:00
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# 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.