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Is it secure to use public DNS?
From the security point of view it is safe, dns is unencrypted so it can be monitored by the ISP and it can of course be monitored by Google, so there may be a privacy concern.
How DNS can be used for security?
DNS resolvers can also be configured to provide security solutions for their end users (people browsing the Internet). Some DNS resolvers provide features such as content filtering, which can block sites known to distribute malware and spam, and botnet protection, which blocks communication with known botnets.
What is DNS and how do you secure it?
The Domain Name System (DNS) is the protocol that makes the Internet usable by allowing the use of domain names. DNS is widely trusted by organizations, and DNS traffic is typically allowed to pass freely through network firewalls. As a result, the security of DNS is a critical component of network security.
Why is it important to have a secure DNS server?
A secure DNS server adds an additional layer of security to the process of DNS resolution. By checking the IP addresses of websites it wants to serve you, it will determine whether they’re malicious or safe to access. And if you request to access an unsecure site, the DNS server will block it and notify you of the occurrence.
Why are unsecure dynamic updates a threat to DNS?
Unsecure dynamic updates allow one to update its own DNS record without authentification. This is clearly a threat because DNS is a UDP based protocol and the source address can easily be spoofed on a LAN.
Can a DNS zone be set to non secure?
AD/DNS zone MUST be configured to allow dynamic updates, whether Secure or Secure and Non-Secure. For client machines, if a client is not joined to the domain, and the zone is set to Secure, it will not register either. You must ONLY use the DNS servers that host a copy of the AD zone name or have a reference to get to them.
Do you need unsecure DNS updates for Linux?
Based on my current research, enabling the unsecure DNS updates is a requirement for enabling DHCP Linux clients from registering their names with a FQDN. While this works fine for Windows machines joined into the domain, the same doesn’t work for Linux clients without enabling these unsecure updates.