Ensure sshd Ciphers are configured

中レベル 1自動linux

説明

This variable limits the ciphers that SSH can use during communication. Notes: • Some organizations may have stricter requirements for approved ciphers. • Ensure that ciphers used are in compliance with site policy. • The only "strong" ciphers currently FIPS 140-3 compliant are: o aes256-gcm@openssh.com o aes128-gcm@openssh.com o aes256-ctr o aes128-ctr

チェック方法

監査方法: シェルコマンド

shell

alt0() { o=$(bash -c 'sshd -T | grep -Pi -- '"'"'^ciphers\h+\"?([^#\n\r]+,)?((3des|aes(128|192|256))- cbc)\b'"'"'' 2>/dev/null); [ -z "$o" ] || { echo "step1: $o" | head -c 300; return 1; }; }; if alt0; then echo compliant; fi

期待される出力: compliant

修正方法

修正方法: ガイダンスまたは IaC パッチ

Note: • First occurrence of an option takes precedence. • Though ciphers may be configured through the Ciphers option in the /etc/ssh/sshd_config file, it is recommended that the ciphers available to openSSH server are configured through system-wide-crypto-policy • If the recommendations in the subsection "Configure system wide crypto policy" have been followed, this Audit should be in a passing state. Please review that section before following this Remediation Procedure • By default, system-wide-crypto-policy is applied to the openSSH server. If the following defaults don't exist due to modifications or upgrade from a earlier release, the system-wide-crypto-policy may not be included by th…

プロパティ

オペレーティングシステム: rocky-10
タグ: cis-convertedlinux
参照: CIS Rocky Linux 10 Benchmark v1.0.0 - 5.1.6

このホストをチェック

監査が許可されているマシンで実行してください。スキャンは読み取り専用です。

shell

tmaegis scan --target linux