mirror of
https://github.com/ovh/debian-cis.git
synced 2024-11-25 15:01:22 +01:00
74 lines
2.3 KiB
Bash
Executable File
74 lines
2.3 KiB
Bash
Executable File
#!/bin/bash
|
|
|
|
#
|
|
# CIS Debian Hardening
|
|
#
|
|
|
|
#
|
|
# 3.1.1 Ensure IP forwarding is disabled (Scored)
|
|
#
|
|
|
|
set -e # One error, it's over
|
|
set -u # One variable unset, it's over
|
|
|
|
HARDENING_LEVEL=3
|
|
HARDENING_EXCEPTION=gw
|
|
DESCRIPTION="Disable IP forwarding."
|
|
|
|
SYSCTL_PARAMS='net.ipv4.ip_forward net.ipv6.conf.all.forwarding'
|
|
SYSCTL_EXP_RESULT=0
|
|
|
|
# This function will be called if the script status is on enabled / audit mode
|
|
audit () {
|
|
for SYSCTL_PARAM in $SYSCTL_PARAMS; do
|
|
does_sysctl_param_exists "net.ipv6"
|
|
if [ $FNRET = 0 ] || [[ ! $SYSCTL_VALUES =~ .*ipv6.* ]]; then # IPv6 is enabled or SYSCTL_VALUES doesn't contain ipv6
|
|
has_sysctl_param_expected_result $SYSCTL_PARAM $SYSCTL_EXP_RESULT
|
|
if [ $FNRET != 0 ]; then
|
|
crit "$SYSCTL_PARAM was not set to $SYSCTL_EXP_RESULT"
|
|
elif [ $FNRET = 255 ]; then
|
|
warn "$SYSCTL_PARAM does not exist -- Typo?"
|
|
else
|
|
ok "$SYSCTL_PARAM correctly set to $SYSCTL_EXP_RESULT"
|
|
fi
|
|
fi
|
|
done
|
|
}
|
|
|
|
# This function will be called if the script status is on enabled mode
|
|
apply () {
|
|
has_sysctl_param_expected_result $SYSCTL_PARAM $SYSCTL_EXP_RESULT
|
|
if [ $FNRET != 0 ]; then
|
|
warn "$SYSCTL_PARAM was not set to $SYSCTL_EXP_RESULT -- Fixing"
|
|
set_sysctl_param $SYSCTL_PARAM $SYSCTL_EXP_RESULT
|
|
sysctl -w net.ipv4.route.flush=1 > /dev/null
|
|
elif [ $FNRET = 255 ]; then
|
|
warn "$SYSCTL_PARAM does not exist -- Typo?"
|
|
else
|
|
ok "$SYSCTL_PARAM correctly set to $SYSCTL_EXP_RESULT"
|
|
fi
|
|
}
|
|
|
|
# This function will check config parameters required
|
|
check_config() {
|
|
:
|
|
}
|
|
|
|
# Source Root Dir Parameter
|
|
if [ -r /etc/default/cis-hardening ]; then
|
|
. /etc/default/cis-hardening
|
|
fi
|
|
if [ -z "$CIS_ROOT_DIR" ]; then
|
|
echo "There is no /etc/default/cis-hardening file nor cis-hardening directory in current environment."
|
|
echo "Cannot source CIS_ROOT_DIR variable, aborting."
|
|
exit 128
|
|
fi
|
|
|
|
# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
|
|
if [ -r $CIS_ROOT_DIR/lib/main.sh ]; then
|
|
. $CIS_ROOT_DIR/lib/main.sh
|
|
else
|
|
echo "Cannot find main.sh, have you correctly defined your root directory? Current value is $CIS_ROOT_DIR in /etc/default/cis-hardening"
|
|
exit 128
|
|
fi
|