> For the complete documentation index, see [llms.txt](https://docs.cloudeka.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cloudeka.ai/deka-flexi/deka-flexi-security/security-firewall-rule.md). # Security Firewall Rule Firewall rules allow you to permit or deny connections to or from a virtual machine (vm) based on the configuration you specify. When you create a firewall rule, you define a set of components that determine what the rule does. Components allow you to target specific traffic types, based on traffic protocols, destination ports, sources, and destinations. {% hint style="warning" %} Before creating a Security Firewall Rule, you must first have an Instance. If you don't have an Instance yet, you can deploy an Instance in [Create VM Instance](/deka-flexi/deka-flexi-instance/create-vm-instance.md). {% endhint %} Here are the steps to create a Security Firewall Rule: * On your **Service Portal Cloudeka**, select the **Security** menu then click the **Create Security** button.

* To create a new Security Firewall Rule, complete the form as shown below.

* The following table describes each field in the Create Security form.

Column	Description
Name	Name of your security.
Description	Description of the security configuration.
Inbound Rule	Define the traffic allowed to the instance on which ports and from which sources.
Outbound Rule	Define the traffic allowed to leave the instance on which ports and to which destinations.
Applied to Instances	Select the instances to which this security rule will be applied.

* After reviewing the field descriptions above, follow the steps below to create a Security Firewall Rule. * Fill in the Create Security form by entering the name of the security configuration in the **Name** field and entering the description in the **Description** field.

* In the **Inbound Rule** section, click the **New Rule** button to add a new rule, define the required rule parameters in the available fields, and click the **Delete** button if you want to remove an existing inbound rule.

* In the **Outbound Rule** section, click the **New Rule** button to add a new rule, define the required rule parameters in the available fields, and click the **Delete** button if you want to remove an existing outbound rule.

* Select the instance in the **Applied to Instances** field where the security configuration will be applied.

* Click the **Create** button to save the security configuration, or click the **Cancel** button if you do not want to continue the process.

* A notification will appear displaying the message "**Security has successfully created**".