Grandstream configuration

if you have not yet registered for the service you can do so by clicking on the following link 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 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 to configure dynamic dns service, then open the \[external access] menu and click on the ddns item 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 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 through the first rule in the image below, the first dns of the filter is allowed to be used through the second rule in the image below, the second dns of the filter is allowed to be used finally, through the rule in the image below we block all other dns other ways to ask how to configure the grandstream grandstream configuration how to