> 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/security/network-security-groups/how-tos.md).

# DCD How-Tos

You can configure Network Security Groups (NSGs) via the DCD and associate it with [<mark style="color:blue;">Network Interface Cards (NICs)</mark>](https://docs.ionos.com/cloud/support/general-information/glossary-of-terms#network-interface-card-nic) or [<mark style="color:blue;">Virtual Machine (VM)</mark>](https://docs.ionos.com/cloud/support/general-information/glossary-of-terms#virtual-machine-vm) resources.

{% hint style="info" %}
**Prerequisites:** Contract administrators and owners can create, access, manage, and use NSGs without additional permissions. For more information, see [<mark style="color:blue;">Set User Privileges for Network Security Groups</mark>](/cloud/security/network-security-groups/how-tos/set-user-privileges.md).
{% endhint %}

<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>Set User Privileges for Network Security Groups</strong></mark></td><td>Learn how to set User privileges for security groups.</td><td><a href="/cloud/security/network-security-groups/how-tos/set-user-privileges.md">Set User Privileges for Network Security Groups</a></td></tr><tr><td><mark style="color:blue;"><strong>Create Default or Custom Network Security Groups</strong></mark></td><td>Learn how to create a Default or Custom NSG.</td><td><a href="/cloud/security/network-security-groups/how-tos/create-nsg.md">Create Default or Custom Network Security Groups</a></td></tr><tr><td><mark style="color:blue;"><strong>Create Rules</strong></mark></td><td>Learn how to define rules.</td><td><a href="/cloud/security/network-security-groups/how-tos/create-rules.md">Create Rules</a></td></tr><tr><td><mark style="color:blue;"><strong>View Rules</strong></mark></td><td>Learn how to view rules associated with an NSG.</td><td><a href="/cloud/security/network-security-groups/how-tos/view-rules.md">View Rules</a></td></tr><tr><td><mark style="color:blue;"><strong>Modify Rules</strong></mark></td><td>Learn how to modify associated rules.</td><td><a href="/cloud/security/network-security-groups/how-tos/modify-rules.md">Modify Rules</a></td></tr><tr><td><mark style="color:blue;"><strong>Delete Rules</strong></mark></td><td>Learn how to delete associated rules.</td><td><a href="/cloud/security/network-security-groups/how-tos/delete-rules.md">Delete Rules</a></td></tr><tr><td><mark style="color:blue;"><strong>Convert Custom Network Security Group to Default</strong></mark></td><td>Learn how to convert a Custom NSG to a Default NSG and vice versa.</td><td><a href="/cloud/security/network-security-groups/how-tos/convert-custom-nsg.md">Convert Custom Network Security Group to Default</a></td></tr><tr><td><mark style="color:blue;"><strong>Attach a Server or NIC to a Network Security Group</strong></mark></td><td>Learn how to attach an NSG to a server or an NIC.</td><td><a href="/cloud/security/network-security-groups/how-tos/attach-nsgs.md">Attach a Server or NIC to a Network Security Group</a></td></tr><tr><td><mark style="color:blue;"><strong>Detach a Server or NIC from a Network Security Group</strong></mark></td><td>Learn how to detach an NSG from a server or NIC.</td><td><a href="/cloud/security/network-security-groups/how-tos/detach-nsgs.md">Detach a Server or NIC from a Network Security Group</a></td></tr><tr><td><mark style="color:blue;"><strong>View Network Security Groups</strong></mark></td><td>Learn how to retrieve a list of all the NSGs that are associated with a data center.</td><td><a href="/cloud/security/network-security-groups/how-tos/view-nsgs.md">View Network Security Groups</a></td></tr><tr><td><mark style="color:blue;"><strong>Update Network Security Groups</strong></mark></td><td>Learn how to update an NSG.</td><td><a href="/cloud/security/network-security-groups/how-tos/update-nsg.md">Update Network Security Groups</a></td></tr><tr><td><mark style="color:blue;"><strong>Delete Network Security Groups</strong></mark></td><td>Learn how to delete your NSGs.</td><td><a href="/cloud/security/network-security-groups/how-tos/delete-nsgs.md">Delete Network Security Groups</a></td></tr></tbody></table>


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