Configure BIND to use System Crypto Policy

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Crypto Policies provide a centralized control over crypto algorithms usage of many packages. BIND is supported by crypto policy, but the BIND configuration may be set up to ignore it.

To check that Crypto Policies settings are configured correctly, ensure that the /etc/named.conf includes the appropriate configuration: In the options section of /etc/named.conf, make sure that the following line is not commented out or superseded by later includes: include "/etc/crypto-policies/back-ends/bind.config";


Overriding the system crypto policy makes the behavior of the BIND service violate expectations, and makes system configuration more fragmented.


Shell script

The following script can be run on the host to remediate the issue.


function remediate_bind_crypto_policy() {
	if test -f "$CONFIG_FILE"; then
		sed -i 's|options {|&\n\tinclude "/etc/crypto-policies/back-ends/bind.config";|' "$CONFIG_FILE"
		return 0
		echo "Aborting remediation as '$CONFIG_FILE' was not even found." >&2
		return 1