Ensure telnet server services are not in use

AltaNivel 1Automatizadafreebsd

Descripción

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).

Cómo se verifica

Método de auditoría: Comando de 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

Salida esperada: compliant

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

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

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: freebsdnetwork
Referencia: CIS FreeBSD 14 Benchmark v1.0.1 - 2.2.8 Ensure telnet server services are not in use

Verificar este host

Ejecute esto en un equipo que tenga permiso para auditar. El escaneo es de solo lectura.

shell

tmaegis scan --target freebsd