66 lines
1.8 KiB
Bash
Executable File
66 lines
1.8 KiB
Bash
Executable File
#!/bin/bash
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#
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# harbian audit 7/8/9/10 or CentOS Hardening
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#
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#
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# 7.1.3 Disable promiscuous mode for network interface (Scored)
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# Author : Samson wen, Samson <sccxboy@gmail.com>
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#
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set -e # One error, it's over
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set -u # One variable unset, it's over
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HARDENING_LEVEL=2
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KEYWORD='promisc'
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# This function will be called if the script status is on enabled / audit mode
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audit () {
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COUNT=$(ip link | grep -i "${KEYWORD}" | wc -l)
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if [ $COUNT -gt 0 ]; then
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crit "The total number of network interfaces with ${KEYWORD} mode set is ${COUNT}"
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FNRET=1
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else
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ok "Not set ${KEYWORD} mode for network interface in the system."
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FNRET=0
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fi
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}
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# This function will be called if the script status is on enabled mode
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apply () {
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if [ $FNRET != 0 ]; then
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warn "Disable promiscuous mode for network interface"
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for INTERFACE in $(ip link | grep -i promisc | awk -F: '{print $2}')
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do
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ip link set dev ${INTERFACE} multicast off promisc off
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done
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else
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ok "Not set ${KEYWORD} mode for network interface in the system."
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fi
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}
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# This function will check config parameters required
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check_config() {
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:
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}
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# Source Root Dir Parameter
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if [ -r /etc/default/cis-hardening ]; then
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. /etc/default/cis-hardening
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fi
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if [ -z "$CIS_ROOT_DIR" ]; then
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echo "There is no /etc/default/cis-hardening file nor cis-hardening directory in current environment."
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echo "Cannot source CIS_ROOT_DIR variable, aborting."
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exit 128
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fi
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# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
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if [ -r $CIS_ROOT_DIR/lib/main.sh ]; then
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. $CIS_ROOT_DIR/lib/main.sh
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else
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echo "Cannot find main.sh, have you correctly defined your root directory? Current value is $CIS_ROOT_DIR in /etc/default/cis-hardening"
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exit 128
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fi
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