BIND-9X-001106 - The BIND 9.x server implementation must utilize separate TSIG key-pairs when securing server-to-server transactions - key
Server-to-server (zone transfer) transactions are provided by TSIG, which enforces mutual server authentication using a key that is unique to each server pair (TSIG), thus uniquely identifying the other server. Enforcing separate TSIG key-pairs provides another layer of protection for the BIND implementation in the event that a TSIG key is compromised. This additional layer of security provides the DNS administrators with the ability to change a compromised TSIG key with a minimal disruption to DNS operations. Failure to identify devices and authenticate devices can lead to malicious activity, such as a Man-In-The-Middle attack where an attacker could pose as an authorized name server, and redirect legitimate customers to malicious websites. A failure on this part could also lead to a Denial of Service of any and all DNS services provided to an organizations network infrastructure. NOTE: Nessus has provided the target output to assist in reviewing the benchmark to ensure target compliance.
Create a separate TSIG key-pair for each key statement listed in the named.conf file. Configure the name server to utilize separate TSIG key-pairs for each key statement listed in the named.conf file. Restart the BIND 9.x process.