Configure a Logging Syslog Channel

Méthode de vérification

Méthode d'audit: Commande shell

if [ -f /var/named/chroot/etc/named.conf ]; then out=$(named-checkconf -t /var/named/chroot -p /etc/named.conf 2>/dev/null) || exit 1
else conf=/etc/named.conf; [ -f "$conf" ] || conf=/etc/bind/named.conf
  out=$(named-checkconf -p "$conf" 2>/dev/null) || exit 1; fi
flat=$(printf '%s\n' "$out" | tr '\t\n' '  ' | tr -s ' ')
opts=$(printf '%s\n' "$out" | awk '/^options[ \t]*\{/{f=1} f{print} f&&/^\};/{exit}' | tr '\t\n' '  ' | tr -s ' ')
printf '%s\n' "$flat" | grep -Eq 'channel "?[^ ]+"? \{[^}]*[{; ]syslog( "?[a-z0-9]+"?)?;' && echo compliant || echo 'no logging syslog channel'

Sortie attendue

compliant

Méthode de correction

Méthode de correction: Recommandation ou correctif d'infrastructure

Configure a syslog channel to capture at least the default and general categories of log events. For external authoritative name servers, the category lame-servers may be redirect to null, so that it is not logged. Using lame name servers is common for the domains used for SPAM and may overload the log with information that is not very useful. logging { . . . // Syslog channel default_syslog { syslog daemon; # send to syslog's daemon facility severity info; # only send priority info and higher }; category default { default_syslog; }; category general { default_syslog; }; // Too many lame servers, especially from SPAM category lame-servers { null; };

Vérifier cet hôte

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

tmaegis scan --target bind