---
title: Grandstream configuration
slug: legacy/grandstream-configuration
description: Learn how to register for a DNS service with step-by-step instructions on changing device settings, configuring Dynamic DNS, and implementing firewall rules. 
docTags: 
createdAt: 2024-08-05T08:32:02.999Z
---

If you have not yet registered for the service you can do so by clicking on the following link: [Register here](https://cloud.flashstart.com/customerarea/demo.php?no-login=1\&lang=IT\&mrks=site).

You need to change the DNS of the device. To do this click on the **\[Network Settings]** side menu then look for the WAN item. Next click in the pen icon under Operations in the chosen WAN.

::Image[]{src="https://api.archbee.com/api/optimize/qeNTDI134aDAkmAtZMoNc/lczpNrLDUb22wB7Awz0GF_image.png" size="50" width="1818" height="388" position="center" caption="Network Settings " alt="Network Settings" showCaption="true"}

Set the WAN according to the desired mode ( DHCP, Static IP, PPPoE, etc.) and manually set the DNS
Enter the address 185.236.104.104 inside the Primary DNS IP field and 185.236.105.105 in the Secondary DNS IP field.



::Image[]{src="https://api.archbee.com/api/optimize/qeNTDI134aDAkmAtZMoNc/PapGYmFVZHcenVVUhBvq0_image.png" size="50" width="1497" height="704" position="center" caption="Secondary DNS " alt="Secondary DNS IP field" showCaption="true"}

To configure Dynamic DNS service, then open the **\[External Access] **menu and click on the DDNS item.

::Image[]{src="https://api.archbee.com/api/optimize/qeNTDI134aDAkmAtZMoNc/gERfnF40y-q9xQRcpmS9__image.png" size="50" width="1813" height="624" position="center" caption="External Access" alt="External Access after configure Dynamic DNS service" showCaption="true"}

**Then configure the various fields as follows:**

- Service Provider: Select Dyndns.org. IMPORTANT: It is not necessary to be registered with the DynDns.org service. The service will still work since the Servers redirect the request to themselves.
- User Name : Enter the user name or email you registered for the Cloud Filter.
- Password: Enter your password, received via email to the address specified during registration.
- Domain : Enter the domain checkip.dyndns.org
- Interface : Select the interface on which to configure the dynamic DNS service.
  Click on the **\[Save]** button to save.

::Image[]{src="https://api.archbee.com/api/optimize/qeNTDI134aDAkmAtZMoNc/ThQcBPQRfmWs6x03pMIBx_image.png" size="50" width="1726" height="703" position="center" caption="Various Fields" alt="Configure the various fields" showCaption="true"}

Finally, you can inhibit clients from using all DNS except filter DNS.
You need to create rules to block all traffic on port 53 (DNS Service), both TCP and UDP, except those directed to our IPs.
Click in the\[Firewall] menu and then on the\[Traffic Rules] item. Within Forwarding Rules, click on Add to add a new rule.

::Image[]{src="https://api.archbee.com/api/optimize/qeNTDI134aDAkmAtZMoNc/7pVk5AK_XGDjUNXU4VXvz_image.png" size="50" width="1857" height="686" position="center" caption="New Rule" alt="Add new Rule on Firewall menu on the Traffic Rules item" showCaption="true"}

Through the first rule in the image below, the first DNS of the filter is allowed to be used.

::Image[]{src="https://api.archbee.com/api/optimize/qeNTDI134aDAkmAtZMoNc/glfyBQowrkzLsxhF5Yt3l_image.png" size="50" width="1557" height="766" position="center" caption="First rule" alt="First rule" showCaption="true"}

Through the second rule in the image below, the second DNS of the filter is allowed to be used.

::Image[]{src="https://api.archbee.com/api/optimize/qeNTDI134aDAkmAtZMoNc/3CxOOf7hLIaiuWb9OP1SF_image.png" size="52" width="1568" height="763" position="center" caption="Second rule" alt="Second Rule" showCaption="true"}

Finally, through the rule in the image below we block all other DNS.

::Image[]{src="https://api.archbee.com/api/optimize/qeNTDI134aDAkmAtZMoNc/GcGDRuaw6YmwB-RJ0nISC_image.png" size="52" width="1651" height="759" position="center" caption="Another rule" alt="block all other DNS" showCaption="true"}

**Other ways to ask**:

- How to configure the Grandstream
- Grandstream configuration. How to.