# Basic settings and customization

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**One-time link is needed in order to transfer the VPN connection configuration to the client in a secure way.**

##### One-time link configuration is available in the menu item **Settings->One-time link**

[![image-1670934358043.png](https://doc.puq.info/uploads/images/gallery/2022-12/scaled-1680-/image-1670934358043.png)](https://doc.puq.info/uploads/images/gallery/2022-12/image-1670934358043.png)

**Lifetime in day -** Time in days during which a one-time link will be available

**Title -** The title of the one-time link page

The **CSS** field contains the CSS style that will be used on the one-time link page.

In the **Before body** field, the text that will be inserted on top of the entire page of the one-time link

In the **After body** field, the text that will be inserted at the bottom of the entire page of the one-time link

**Not relevant text -** The text that will be shown if the one-time link is not available or there is no link.

<p class="callout info">To reset the default settings, click the **Set default** button</p>