Teltonika DNS use with cloudflare

[burkinar]

hello team,
I would like to understand the use of DNS on my teltonika 951 router. I have web services behind my router and configured with DDNS and it works well. I modified the DNS as in the image below

to use cloudflare DNS because it is the cloudflare platform that manages my domains.

I have two questions:
1- what is the advantage of using cloudflare DNS compared to google DNS or others?
2- what command should I use to check if my DNS that I just modified works?

[Martynas]

Hello,

Thank you for reaching out.

1. The main advantages of using Cloudflare DNS compared to Google DNS are:

• Privacy: Cloudflare emphasizes user privacy by not logging personal data, such as IP addresses;
• Speed: Cloudflare claims to have one of the fastest DNS resolution times globally;
• Security: Cloudflare DNS offers built-in features like DNSSEC (which protects against DNS spoofing)

2. To check if the DNS server resolves domains correctly by querying a domain using nslookup command and specifying the modified DNS server. E.g. nslookup google.com 1.1.1.1.
   If the command returns the IP address of google.com, it means the DNS is working as expected.

If you have any further questions or need additional assistance, feel free to reach out.

Best Regards,

[burkinar]

hello @Martynas

Thanks for the clear and concise information. However I still have two questions
1- can we configure several DNS servers in the single router such as CLOUDFLARE, GOOGLE and NEXDNS?
2- how to configure NEXDNS on the RUT951 router?

[Martynas]

Hello,

Thank you for your questions.

1. Yes, you can configure multiple DNS servers on a single router. Different DNS server IPs, such as CLOUDFLARE, GOOGLE, and NEXDNS, can be added in the router’s WebUI by navigating to Network → DNS and entering the addresses in the “DNS servers” field.
2. To configure NEXDNS on your RUT951, go to Network → DNS in the WebUI and input the following DNS IP addresses:

• 45.90.28.247
  Click the Plus icon to add the second IP address.
• 45.90.30.247

Additionally, more beneficial information regarding DNS servers can be found here.

If you have any additional questions, feel free to ask.

Best regards,