This allows the clients only to resolve the records that you have authorised through your DNS server. It only allows the IP addresses of your DNS server. This new rule will disallow port 53 of TCP and UDP from all the sources of IP addresses. Instead of your server, this client check is only against their servers.įollow the steps to ensure Client connection:ġ. The first step is to log in to the Firewall or your Router.Ģ. Now you need to add an outgoing firewall rule. This helps us remove the slight possibility of client checking DNS record of TeamViewer. Your internal DNS servers contain the dummy record we created. You will need to ensure that to your internal DNS servers only DNS connections are granted access. In this step, you need to check if the clients can’t connect to the external DNS servers. By not pointing this record anywhere, you will automatically stop your network connections to this new domain.

Now, if you are using your own DNS server, just like the Active Directory server, then this would be easy for you.ġ. First, you need to open the DNS management console.Ģ. You will now need to create your own top-level record for the TeamViewer domain ( ). DNS Blockįirst of all, you will need to block the DNS records resolution from the domain of TeamViewer, i.e.,. Let us now get through the steps to block TeamViewer: #1. Hackers and Criminals get illegal access. There were a lot of high volume allegations about TeamViewer users getting their systems hacked. Now with this easy installation and access, how would you block TeamViewer on your network? This makes the set up for this application very easy. Well, the thing is TeamViewer does not require any configuration or any other firewall to connect two computers. In this article, we will explain to you how to do so. Still, you may somehow want to block this application from your network. How to Block TeamViewer on your Network.

Allow teamviewer through firewall