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.

Server DNS Quad9
Anda perlu mengarahkan server DNS Anda ke 9.9.9.9, dan malware dan phishes yang dikenal tidak akan dapat menggunakan DNS untuk tujuan yang buruk :

  • 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

Cara men-setup resolver DNS Quad9

edit dengan cara

# nano  /etc/resolv.conf
nameserver 9.9.9.9
nameserver 2620:fe::fe
domain dnsknowledge.com
options rotate

Kemudian lakukan tes :

$ dig google.com
$ host dnsknowledge.com