> For the complete documentation index, see [llms.txt](https://docs.cloudcyte.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cloudcyte.com/pre-requirements-and-initialization-of-the-platform/access-and-exlusion-requirements/agent-based-on-premises-deployment.md).

# Agent-Based On-Premises Deployment

## On-Premises-Based Deployment Network Permissions

| Portal Server                         | \*.cloudcyte.com                                                         | TCP 443            | Initial Deployment             |
| ------------------------------------- | ------------------------------------------------------------------------ | ------------------ | ------------------------------ |
| Portal Server                         | <p>download.cloudcyte.com<br>s3.cloudcyte.com</p>                        | TCP 443            | Updates and Patches            |
| Portal Server                         | <p>registry.cloudcyte.com</p><p>clapi.cloudcyte.com</p>                  | TCP 443            | Container and API Access       |
| Portal Server                         | \*.sendgrid.com                                                          | TCP 443            | MFA Usage                      |
| <p>Portal Server</p><p>(Optional)</p> | \*.twilio.com                                                            | TCP 443            | SMS Messages                   |
| Portal Server (Optional)              | \*.virustotal.com                                                        | TCP 443            | Threat intelligence            |
| Portal Server                         | <p>login.microsoftonline.com</p><p>cybercytekeyvault.vault.azure.net</p> | TCP 443            | Digital Signing                |
| Scanner Server                        | Portal Server                                                            | TCP 443, ICMP      | Internal Communication         |
| Agents                                | Portal Server                                                            | TCP 443            | Agent Communication            |
| Management Server                     | Portal & Broker & DB Server                                              | TCP 443, ICMP 5432 | Admin Access & troubleshooting |
| Portal Server                         | Database Server                                                          | TCP 5432           | Database Access                |