Ensure sshd Banner is configured

낮음레벨 1자동freebsd

설명

The Banner parameter specifies a file whose contents must be sent to the remote user before authentication is permitted. By default, no banner is displayed. Banners are used to warn connecting users of the particular site's policy regarding connection. Presenting a warning message prior to the normal user login may assist the prosecution of trespassers on the computer system. Audit: evaluates the effective configuration from `sshd -T` (Match blocks must be reviewed separately).

점검 방법

감사 방식: 셸 명령

shell

command -v sshd >/dev/null 2>&1 || exit 1; out=$(sshd -T 2>/dev/null) || exit 1; r=compliant; for p in '^banner[[:blank:]]+/etc/issue\.net$'; do printf '%s\n' "$out" | grep -Eiq -- "$p" || r="not matched: $p"; done; echo "$r"

예상 출력: compliant

조치 방법

조치 방식: 가이드 또는 인프라 패치

Edit the /etc/ssh/sshd_config file to set the parameter above any Include entries as follows: Banner /etc/issue.net

속성

운영 체제: 모두
태그: freebsdssh
참고 자료: CIS FreeBSD 14 Benchmark v1.0.1 - 4.2.5 Ensure sshd Banner is configured

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shell

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