TMA-FREEBSD-2.2.8

Ensure telnet server services are not in use

ÉlevéeNiveau 1Automatiséefreebsd

Description

The freebsd-telnetd package contains the telnet daemon, which accepts connections from users from other systems via the telnet protocol. The telnet protocol is insecure and unencrypted. The use of an unencrypted transmission medium could allow a user with access to sniff network traffic the ability to steal credentials. The ssh service provides an encrypted session and stronger security. Audit: telnet must not be enabled in /etc/inetd.conf (or freebsd-telnetd is not installed).

Méthode de vérification

Méthode d'audit: Commande shell

shell

command -v grep >/dev/null 2>&1 || exit 1; out=$( { grep -E "^telnet[[:space:]]" /etc/inetd.conf ; } 2>/dev/null ); [ -z "$out" ] && echo compliant || printf '%s\n' "$out" | head -n 20

Sortie attendue: compliant

Méthode de correction

Méthode de correction: Recommandation ou correctif d'infrastructure

Run the following commands to stop and disable telnet: # sed -i '' -e 's|^telnet|#telnet|g' /etc/inetd.conf # service inetd restart -AND- -IF- a package is installed and is required for dependencies: Run the following commands to remove the freebsd-telnetd package: # pkg remove freebsd-telnetd

Propriétés

Systèmes d'exploitation: Tous
Étiquettes: freebsdnetwork
Référence: CIS FreeBSD 14 Benchmark v1.0.1 - 2.2.8 Ensure telnet server services are not in use

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