> For the complete documentation index, see [llms.txt](https://docs.ionos.com/cloud/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ionos.com/cloud/network-services/vdc-networking/firewall/how-tos.md).

# How-Tos

IONOS CLOUD NIC-based Firewall: how-to guides for managing firewall rules

This section provides instructions for activating and managing firewalls on your Virtual Data Center (VDC) network interfaces. Follow these to configure firewall protection and rules that control how traffic flows through your infrastructure.

## Quick Links

<table data-view="cards"><thead><tr><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><mark style="color:blue;"><strong>Activate an NIC-based Firewall</strong></mark></td><td>Learn how to enable firewall protection on your NICs to filter incoming, outgoing, or bidirectional traffic.</td><td><a href="/cloud/network-services/vdc-networking/firewall/how-tos/activate-firewall.md">Activate an NIC-based Firewall</a></td></tr><tr><td><mark style="color:blue;"><strong>Create an NIC-based Firewall Rule</strong></mark></td><td>Learn how to configure specific firewall rules to control network traffic based on your requirements.</td><td><a href="/cloud/network-services/vdc-networking/firewall/how-tos/create-firewall-rule.md">Create an NIC-based Firewall Rule</a></td></tr></tbody></table>


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