Ensure sshd Banner is configured

FaibleNiveau 1Automatiséefreebsd

Description

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).

Méthode de vérification

Méthode d'audit: Commande shell

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"

Sortie attendue: compliant

Méthode de correction

Méthode de correction: Recommandation ou correctif d'infrastructure

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

Propriétés

Systèmes d'exploitation: Tous
Étiquettes: freebsdssh
Référence: CIS FreeBSD 14 Benchmark v1.0.1 - 4.2.5 Ensure sshd Banner is configured

Vérifier cet hôte

Exécutez cette commande sur une machine que vous êtes autorisé à auditer. L'analyse est en lecture seule.

shell

tmaegis scan --target freebsd