Objet: bloquer les scanneurs de ports

Installation avec la méthode habituelle: apt install portsentry

Puis modification de certains paramètres dans le fichier /etc/portsentry/portsentry.conf :

##################
# Ignore Options #
##################
\[...]
# 0 = Do not block UDP/TCP scans.
# 1 = Block UDP/TCP scans.
# 2 = Run external command only (KILL_RUN_CMD)

BLOCK_UDP="2"
BLOCK_TCP="2"

###################
# External Command#
###################
\[...]
# The KILL_RUN_CMD_FIRST value should be set to "1" to force the command 
# to run \*before\* the blocking occurs and should be set to "0" to make the 
# command run \*after\* the blocking has occurred. 
#
KILL_RUN_CMD_FIRST = "1"
#
#
KILL_RUN_CMD="/home/unutilisateur/portsentry_ext_cmd.sh $TARGET$"
# for examples see /usr/share/doc/portsentry/examples/