#Network #Linux #Article

How to setup Quad9 DNS on a Linux

Domain Name Servers (DNS) are essential for the Internet. Every computer or mobile device use DNS to access websites, email servers, APIs and other stuff. One must configure a DNS service. You can use your ISP’s DNS, Google DNS, and OpenDNS. Now you have one more option from IBM. It is called Quad9 DNS service. It can block malicious domains for everyone. You can get an additional layer of protection.

How does Quad9 protect me from malicious domains?

Quad9 brings together cyber threat intelligence about malicious domains from variety of public and private sources and blocks access to those malicious domains when your system attempts to contact them. When you use Quad9, attackers and malware cannot leverage the known malicious domains to control your systems, and their ability to steal your data or cause harm will be hindered. Quad9 is an effective and easy way to add an additional layer of security to your infrastructure for free.

Quad9 DNS server :

Secure IPv4: 9.9.9.9 Blocklist, DNSSEC, No EDNS Client-Subnet
Unsecure IPv4: 9.9.9.10 No blocklist, no DNSSEC, send EDNS Client-Subnet
Secure IPv6: 2620:fe::fe Blocklist, DNSSEC, No EDNS Client-Subnet
Unsecure IPv6: 2620:fe::10 No blocklist, no DNSSEC, send EDNS Client-Subnet

https://www.dnsknowledge.com/tutorials/how-to-setup-quad9-dns-on-a-linux/

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#devtools #article