Help Center
Home Server & Cloud Infrastructure Dedicated Server

Setting Up the Firewall for a Dedicated Server

For Dedicated Servers, Server Power Deals and Value Dedicated Servers managed in the server administration of the IONOS account

This article explains how to set up the external IONOS firewall for your Dedicated Server.

The IONOS firewall offers you the advantages of a dedicated hardware firewall and supports IPv6. This allows you to filter out packets or block access before they even reach your server.

The firewall is deactivated by default and can be activated as follows:

  • Log in to your IONOS account.

  • Click on the  Server & Cloud tile. If you have multiple server contracts, select the desired contract.

  • Click on Firewalls in the Technical data section.

  • Click on Create firewall.

  • Select the IP address.

  • To enable the firewall after saving, select the Active status.

  • Select a rule set. You can subsequently change the selected rule set and create a new rule if necessary.

    The selection of predefined rule sets (system rule set) depends on the server operating system (Linux or Windows). These cannot be changed but can be used as templates for your own rule sets.

Hint

You can find help on creating your own rule sets in the article Create rule set for hardware firewall.

Predefined rule sets for Linux operating systems
Rule Description
SSH Only This rule set only allows connections via SSH.
IPv6 SSH Only This rule set only allows connections via SSH.
IPv6 Linux Webserver Allows access to websites via http and https. Access via Plesk and SSH is possible for server administration.
Linux Web & Mail Server Allows access to websites via http and https. This rule set also allows the server to be used as a mail server. The server can be administered via Plesk and SSH.
IPv6 Linux Web & Mail Server Allows access to websites via http and https. This rule set also allows the server to be used as a mail server.
Predefined rule sets for Windows operating systems
Rule Description
Remote Desktop This rule set only allows connections via remote desktop.
IPv6 Remote Desktop This rule set only allows connections via remote desktop.
Windows Web Server Allows access to websites via http and https. Access via remote desktop is possible for administration of the server.
IPv6 Windows Web Server Allows access to websites via http and https. Access via remote desktop is possible for the administration of the server.

  • Click on Save. The firewall will now be activated within the next few minutes.