# Commonly used ports

The table provided below enumerates the commonly used ports for both the Helmut server and client.

<table><thead><tr><th width="214.33333333333331">Type</th><th width="143">Protocol</th><th>Port</th><th>Notes</th></tr></thead><tbody><tr><td>MoovIT's repository<br>repo.moovit24.de</td><td>TCP</td><td>443</td><td>needed to update / install new version</td></tr><tr><td>DNS</td><td>TCP</td><td>53</td><td></td></tr><tr><td>SMB</td><td>TCP</td><td>137, 138, 139, 445</td><td>may vary depending on the storage</td></tr><tr><td>LDAP</td><td>TCP &#x26; UDP</td><td>389</td><td></td></tr><tr><td>SMTP</td><td>TCP</td><td>25</td><td></td></tr><tr><td>Helmut Client</td><td>TCP</td><td>80, 443</td><td>Depending if SSL is enabled</td></tr><tr><td>Portainer</td><td>TCP</td><td>9000</td><td></td></tr></tbody></table>

### Host system

The host operating system should have access to its own repository to install and update additional dependencies.