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Add fail2ban solution for systems that only log with systemd. #1437

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Add fail2ban solution for systems that only log with systemd. #1437

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5 changes: 5 additions & 0 deletions content/en/admin/prerequisites.md
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Expand Up @@ -51,6 +51,11 @@ Finally, restart fail2ban:
systemctl restart fail2ban
```

If the service should fail with the error "Failed during configuration: Have not found any log file for sshd jail",
switch logging to systemd by adding the line `backend=systemd` to the `[sshd]` section.
You might also have to install the `python3-systemd` package.


## Install a firewall and only allow SSH, HTTP and HTTPS ports

First, install iptables-persistent. During installation, it will ask you if you want to keep the current rules–decline.
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