Enable DNSSEC Validation

OrtaDüzey 1Otomatikbind

Açıklama

DNS Security Extensions or DNSSEC for short provides authentication of the name servers through public key cryptography. With DNSSEC, the name server signs its responses with its private key. This allows other name servers that have the public key of the name server to verify the integrity and authenticity of the response. The audit fails when dnssec-validation or dnssec-enable is set to no (the BIND 9.11 defaults validate); the PDF also suggests the delv @127.0.0.1 isc.org "fully validated" test. The audit parses the effective configuration printed by named-checkconf -p (all include files resolved) from /etc/named.conf (RHEL; chroot /var/named/chroot is detected) or /etc/bind/named.conf (Debian/Ubuntu).

Nasıl denetlenir

Denetim yöntemi: Kabuk komutu

shell

if [ -f /var/named/chroot/etc/named.conf ]; then out=$(named-checkconf -t /var/named/chroot -p /etc/named.conf 2>/dev/null) || exit 1
else conf=/etc/named.conf; [ -f "$conf" ] || conf=/etc/bind/named.conf
  out=$(named-checkconf -p "$conf" 2>/dev/null) || exit 1; fi
flat=$(printf '%s\n' "$out" | tr '\t\n' '  ' | tr -s ' ')
opts=$(printf '%s\n' "$out" | awk '/^options[ \t]*\{/{f=1} f{print} f&&/^\};/{exit}' | tr '\t\n' '  ' | tr -s ' ')
printf '%s\n' "$flat" | grep -Eq '[{; ]dnssec-validation no;' && { echo 'dnssec-validation no'; exit 1; }
printf '%s\n' "$flat" | grep -Eq '[{; ]dnssec-enable no;' && { echo 'dnssec-enable no'; exit 1; }
echo compliant

Beklenen çıktı: compliant

Nasıl düzeltilir

Düzeltme yöntemi: Kılavuz veya altyapı yaması

Perform the following for remediation: ; Check the BIND configuration files, and in the global options set the option dnssec- enable to yes, and option dnssec-validation to either yes or auto as shown below. The auto setting is generally preferred as the trust anchor will not need to be manually configured. dnssec-enable yes dnssec-validation auto ; Restart the named server.

Özellikler

İşletim sistemleri: Herhangi biri
Etiketler: binddnsdnssec
Referans: CIS ISC BIND DNS Server 9.11 Benchmark v1.0.0 - 7.2 Enable DNSSEC Validation

Bu ana makineyi denetle

Bunu denetleme izniniz olan bir makinede çalıştırın. Tarama salt okunurdur.

shell

tmaegis scan --target bind