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#!/usr/bin/bash
# msec: this checks if the network is in promiscuous mode
. /usr/share/msec/functions.sh
LogPromisc() {
date=`date`
tempfile=`mktemp /tmp/promisc.XXXXXX`
echo "Security warning : $1 is in promiscuous mode." > $tempfile
echo " A sniffer is probably running on your system." >> $tempfile
Syslog $tempfile
echo "\\033[1;31mSecurity warning : $1 is in promiscuous mode.\\033[0;39m" > $tempfile
echo "\\033[1;31mA sniffer is probably running on your system.\\033[0;39m" >> $tempfile
Ttylog $tempfile
rm -f $tempfile
# are we being run from security.sh script?
if [ ! -z "$SECURITY" ]; then
printf "\nSecurity Warning: $1 is in promiscuous mode!" >> ${SECURITY}
printf " A sniffer is probably running on your system." >> ${SECURITY}
fi
}
if [[ -f /etc/security/msec/security.conf ]]; then
. /etc/security/msec/security.conf
else
echo "/etc/security/msec/security.conf don't exist."
exit 1
fi
if tail /var/log/security.log | grep -q "promiscuous"; then
# Dont flood with warning.
exit 0
fi
# Check if a network interface is in promiscuous mode...
if [[ ${CHECK_PROMISC} == no ]]; then
exit 0;
fi
for INTERFACE in `/sbin/ip link list | grep PROMISC | cut -f 2 -d ':';/usr/bin/promisc_check -q`; do
LogPromisc ${INTERFACE}
done
# promisc_check.sh ends here
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