For Cloud Servers, Virtual Server Cloud, Dedicated Servers and Server Power Deals managed in the Cloud Panel

How to create a firewall policy to allow certain types of network traffic:

  • Log in to your IONOS account.
  • Click Menu > Server & Cloud in the title bar.
    Optional: Select the desired Server & Cloud contract.

    The Cloud Panel opens.

  • Click Network > Firewall policies in the navigation bar on the left.
  • Click on Create.
  • Enter the desired name for the firewall policy.
  • In the Configuration area, you can create customised or predefined firewall rules:

    Individual Firewall Rule

    Allowed IP: Enter the desired IP address for which access should be allowed. Alternatively, you can enter a desired IP address range in the following format:

    Protocol: Select the desired protocol.

    Port(s): Enter the desired port. Alternatively, you can enter a port range or several ports. To create a rule for a port range, enter the lower and upper range values. Separate these values with a hyphen. Example: 4000-5000. To create a separate firewall rule for several ports, enter the desired ports with a comma to separate them.

    Description: Enter a description for the firewall rule.

    Predefined firewall rule

    To add a predefined rule, click on Insert default values. Then select the rule you want and adjust it manually if necessary. Some of the available rules are listed below:

    • Block all ports: Blocks all incoming ports of the server.
    • Open all ports: Opens all incoming ports of the server.
    • HTTP: Opens port 80 for incoming requests.
    • HTTPS: Opens port 443 for incoming requests.
    • POP3 SSL: Opens port 995 for incoming requests.
    • -: Opens port 993 for incoming requests.

    To save a new firewall rule, click on  .

    To reset a firewall rule, click on .

    To delete a firewall rule, click on .


For security reasons, SMTP port 25 (outgoing) is blocked. If you would like to unblock the SMTP port, please contact customer service.

  • Click on Create  to create the Firewall Policy.

The firewall policy has been created.

As soon as the firewall policy is active, you can add a server.