How do I disable Open Recursion on my Name Server? ( dns Server)

Many network attackers attempt to utilize DNS servers with open recursion to conduct DDoS (Distributed Denial of Service) attacks on various websites or servers. Here is how you can prevent this by disabling recursive queries in BIND:

1. Add the following to the options section of /etc/named.conf:

allow-transfer {“none”;};

allow-recursion {“none”;};

recursion no;

2. Reload the config changes:

# service named reload