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BIND DNS

TMA-BIND-4.2

Include Cryptographic Key Files

中等級 1自動化bind

說明

Do not place keys directly in the BIND named.conf, but use separate configuration files for the keys and include them into the named.conf file, in order to protect the keys from unintentional disclosure. The audit requires the main named.conf (/etc/named.conf, /etc/bind/named.conf or the chroot copy) to contain no secret statements; keys belong in separate included key files.

檢查方式

稽核方法: Shell 指令

shell
bad=''
for f in /etc/named.conf /etc/bind/named.conf /var/named/chroot/etc/named.conf; do [ -f "$f" ] || continue; grep -Eq '^[^#/]*secret[[:space:]]+"' "$f" && bad="$bad $f"; done
[ -z "$bad" ] && echo compliant || echo "secret keys embedded in:$bad"
預期輸出
compliant

修補方式

修補方法: 操作指南或基礎設施修補檔

Move each key definition statement from the named.conf file into its own key file. It is recommended to name both the key and the key file after the two hosts that will be sharing the secret key, in order to avoid confusion. Then include the key files with include statements in the named.conf. An example is shown below with the key definition statement moved to a separate key file, however it is also accepted for only the secret statement to be moved to another file. # grep -C 1 include /etc/named.conf // Include the key file used for the host1 and host2 TSIG comms include "/etc/private/host1-host2.cisecurity.org.key"

屬性

作業系統
不限
標籤
binddnstsig
參考資料
CIS ISC BIND DNS Server 9.11 Benchmark v1.0.0 - 4.2 Include Cryptographic Key Files

檢查此主機

請在您有權稽核的機器上執行此指令。掃描為唯讀操作。

shell
tmaegis scan --target bind