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|
#!/bin/bash
#
# Security level implementation...
# Writen by Vandoorselaere Yoann <yoann@mandrakesoft.com>
#
if [[ -f /etc/security/msec/init-sh/lib.sh ]]; then
. /etc/security/msec/init-sh/lib.sh
fi
clear
###
echo "Do you want all system events to be logged on tty12 ?"
WaitAnswer; clear
if [[ ${answer} == yes ]]; then
AddRules "*.* /dev/tty12" /etc/syslog.conf
fi
###
echo "Do you want to only allow ctrl-alt-del if root is logged locally ?"
echo "( or if an user present in /etc/shutdown.allow is logged locally )"
WaitAnswer; clear
tmpfile=`mktemp tmp/secure.XXXXXX`
cp /etc/inittab ${tmpfile}
if [[ ${answer} == yes ]]; then
cat ${tmpfile} | \
sed s'/ca::ctrlaltdel:\/sbin\/shutdown -t3 -r now/ca::ctrlaltdel:\/sbin\/shutdown -a -t3 -r now/' > /etc/inittab
else
cat ${tmpfile} | \
sed s'/ca::ctrlaltdel:\/sbin\/shutdown -a -t3 -r now/ca::ctrlaltdel:\/sbin\/shutdown -t3 -r now/' > /etc/inittab
fi
rm -f ${tmpfile}
###
echo "Do you want to deny any machine to connect to yours ?"
WaitAnswer
if [[ ${answer} == yes ]]; then
echo "Do you want only localhost to be allowed ?"
WaitAnswer; clear
if [[ ${answer} == yes ]]; then
AddRules "ALL:ALL EXCEPT localhost:DENY" /etc/hosts.deny
else
AddRules "ALL:ALL:DENY" /etc/hosts.deny
fi
fi
###
echo "Do you want root console login to be allowed ?"
WaitAnswer; clear
if [[ ${answer} == yes ]]; then
g AddRules "tty1" /etc/securetty quiet
AddRules "tty2" /etc/securetty quiet
AddRules "tty3" /etc/securetty quiet
AddRules "tty4" /etc/securetty quiet
AddRules "tty5" /etc/securetty quiet
AddRules "tty6" /etc/securetty
fi
###
echo "Do you want your system to daily check important security problem ?"
WaitAnswer; clear
if [[ ${answer} == yes ]]; then
AddRules "CHECK_SECURITY=yes" /etc/security/msec/security.conf
AddRules "0 0-23 * * * root nice --adjustment=+19 /etc/security/msec/cron-sh/security.sh" /etc/crontab
fi
###
echo "Do you want your system to daily check new open port listening ?"
WaitAnswer; clear
if [[ ${answer} == yes ]]; then
AddRules "CHECK_OPEN_PORT=yes" /etc/security/msec/security.conf
AddRules "0 0-23 * * * root nice --adjustment=+19 /etc/security/msec/cron-sh/security.sh" /etc/crontab
fi
###
echo "Do you want your system to check for grave permission problem on senssibles files ?"
WaitAnswer; clear
if [[ ${answer} == yes ]]; then
AddRules "CHECK_PERMS=yes" /etc/security/msec/security.conf
AddRules "0 0-23 * * * root nice --adjustment=+19 /etc/security/msec/cron-sh/security.sh" /etc/crontab
fi
###
echo "Do you want your system to daily check SUID Root file change ?"
WaitAnswer; clear
if [[ ${answer} == yes ]]; then
AddRules "CHECK_SUID_ROOT=yes" /etc/security/msec/security.conf
AddRules "0 0-23 * * * root nice --adjustment=+19 /etc/security/msec/cron-sh/security.sh" /etc/crontab
fi
###
echo "Do you want your system to daily check suid files md5 checksum changes ?"
WaitAnswer; clear
if [[ ${answer} == yes ]]; then
AddRules "CHECK_SUID_MD5=yes" /etc/security/msec/security.conf
AddRules "0 0-23 * * * root nice --adjustment=+19 /etc/security/msec/cron-sh/security.sh" /etc/crontab
fi
###
echo "Do you want your system to daily check SUID Group file change ?"
WaitAnswer; clear
if [[ ${answer} == yes ]]; then
AddRules "CHECK_SUID_GROUP=yes" /etc/security/msec/security.conf
AddRules "0 0-23 * * * root nice --adjustment=+19 /etc/security/msec/cron-sh/security.sh" /etc/crontab
fi
###
echo "Do you want your system to daily check Writeable file change ?"
WaitAnswer; clear
if [[ ${answer} == yes ]]; then
AddRules "CHECK_WRITEABLE=yes" /etc/security/msec/security.conf
AddRules "0 0-23 * * * root nice --adjustment=+19 /etc/security/msec/cron-sh/security.sh" /etc/crontab
fi
###
echo "Do you want your system to daily check Unowned file change ?"
WaitAnswer; clear
if [[ ${answer} == yes ]]; then
AddRules "CHECK_UNOWNED=yes" /etc/security/msec/security.conf
AddRules "0 0-23 * * * root nice --adjustment=+19 /etc/security/msec/cron-sh/security.sh" /etc/crontab
fi
###
echo "Do you want your system to verify every minutes if a network interface"
echo "is in promiscuous state (which mean someone is probably running a sniffer on your machine ) ?"
WaitAnswer; clear
if [[ ${answer} == yes ]]; then
AddRules "CHECK_PROMISC=yes" /etc/security/msec/security.conf
AddRules "*/1 * * * * root nice --adjustment=+19 /etc/security/msec/cron-sh/promisc_check.sh" /etc/crontab
fi
###
echo "Do you want security report to be done directly on the console ?"
WaitAnswer; clear
if [[ ${answer} == yes ]]; then
AddRules "TTY_WARN=yes" /etc/security/msec/security.conf
else
AddRules "TTY_WARN=no" /etc/security/msec/security.conf
fi
###
echo "Do you want security report to be done in syslog ?"
WaitAnswer; clear
if [[ ${answer} == yes ]]; then
AddRules "SYSLOG_WARN=yes" /etc/security/msec/security.conf
else
AddRules "SYSLOG_WARN=no" /etc/security/msec/security.conf
fi
###
echo "Do you want security report to be done by mail ?"
WaitAnswer; clear
if [[ ${answer} == yes ]]; then
AddRules "MAIL_WARN=yes" /etc/security/msec/security.conf
else
AddRules "MAIL_WARN=no" /etc/security/msec/security.conf
fi
###
LiloUpdate;
/sbin/lilo >& /dev/null
###
echo "Do you want to disable your running server ( except important one )"
echo "This is only valuable for server installed with rpm."
WaitAnswer; clear
if [[ ${answer} == yes ]]; then
echo -n "Disabling all service, except : {"
chkconfig --list | awk '{print $1}' | while read service; do
if grep -qx ${service} /etc/security/msec/init-sh/server.4; then
echo -n " ${service}"
fi
done
echo " } : "
chkconfig --list | awk '{print $1}' | while read service; do
chkconfig --del "${service}"
if ! chkconfig --msec --add "${service}"; then
echo -e "\t- Services ${service} is now disabled."
fi
done
echo -e "done.\n";
fi
###
echo "Do you want to disallow rpm to automatically enable a new installed server for run on next reboot ?"
echo "yes = you will need to chkconfig (--add ) servername for the server to run on boot."
echo "no = rpm will do it for you, but you have less control of what is running on your machine."
WaitAnswer; clear
if [[ ${answer} == yes ]]; then
export SECURE_LEVEL="4"
AddRules "SECURE_LEVEL=\"4\"" /etc/profile
else
AddRules "SECURE_LEVEL=\"3\"" /etc/profile
fi
###
echo "Do you want an easy, normal, restricted, or paranoid umask ?"
echo "easy ( 002 ) = user = rwx, group = rwx, other = rx"
echo "normal ( 022 ) = user = rwx, group = rx, other = rx"
echo "restricted ( for users ) ( 077 ) = user = rwx, group =, other ="
echo "restricted ( for root ) ( 022 ) = user = rwx, = group = rx, other = rx"
echo "paranoid ( 077 ) = user = rwx, group = , other ="
answer="nothing"
while [[ "${answer}" != "easy" && "${answer}" != "normal" && "${answer}" != "restricted" && "${answer}" != "paranoid" ]]; do
echo -n "easy/normal/restricted/paranoid : "
read answer
done
case "${answer}" in
"easy")
AddRules "umask 002" /etc/profile
;;
"normal")
AddRules "umask 022" /etc/profile
;;
"restricted")
AddRules "if [[ \${UID} == 0 ]]; then umask 022; else umask 077; fi" /etc/profile
;;
"paranoid")
AddRules "umask 077" /etc/profile
;;
esac
###
echo "Do you want a "." in your PATH variable ?"
echo "This permit you to not use ./progname & to just type progname"
echo "However this is a *high* security risk."
WaitAnswer; clear
if [[ ${answer} == yes ]]; then
AddRules "PATH=\$PATH:/usr/X11R6/bin:/usr/games:." /etc/profile quiet
else
AddRules "PATH=\$PATH:/usr/X11R6/bin:/usr/games" /etc/profile quiet
fi
AddRules "export PATH SECURE_LEVEL" /etc/profile
|
