#!/bin/bash # # Security level implementation... # Writen by Vandoorselaere Yoann # if [ -f /etc/security/msec/init-sh/lib.sh ]; then . /etc/security/msec/init-sh/lib.sh fi chattr +a /var/log/* # All events logged on tty12 AddRules "*.* /dev/tty12" /etc/syslog.conf # Prevent all kind of connection AddRules "ALL:ALL:DENY" /etc/hosts.deny # No login as root AddRules "" /etc/securetty # Suid check AddRules "CHECK_SUID_ROOT=yes" /etc/security/msec/security.conf AddRules "CHECK_SUID_GROUP=yes" /etc/security/msec/security.conf AddRules "CHECK_WRITABLE=yes" /etc/security/msec/security.conf AddRules "CHECK_UNOWNED=yes" /etc/security/msec/security.conf AddRules "CHECK_PROMISC=yes" /etc/security/msec/security.conf AddRules "TTY_WARN=yes" /etc/security/msec/security.conf AddRules "SYSLOG_WARN=yes" /etc/security/msec/security.conf # Check every 1 minutes for promisc problem AddRules "*/1 * * * * root nice --adjustment=+19 /etc/security/msec/cron-sh/promisc_check.sh" /etc/crontab AddRules "0 0-23 * * * root nice --adjustment=+19 /etc/security/msec/cron-sh/file_check.sh" /etc/crontab # Wanna a password ? LiloUpdate; /sbin/lilo # Disable all server : AddRules "SECURE_LEVEL=5" /etc/profile IFS=" " export SECURE_LEVEL=5 for service in `chkconfig --list | awk '{print $1}'`; do chkconfig --del "${service}" chkconfig --msec --add "${service}" done # Permissions AddRules "umask 077" /etc/profile # Path AddRules "PATH=\$PATH:/usr/X11R6/bin" /etc/profile echo echo "You are now running your system in security level 5," echo "All services are disabled : try the chkconfig to enable one..." echo "If you're on a senssible machine, ( which is probably the case )" echo "you should compile the server from the sources". echo echo "Good luck. :-)" echo