#!/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 else exit 1 fi # All events logged on tty12 echo "Loging all messages on tty12 : " AddRules "*.* /dev/tty12" /etc/syslog.conf # login as root from the console allowed echo "Login as root is allowed (on the console) : " AddRules "tty1" /etc/securetty AddRules "tty2" /etc/securetty quiet AddRules "tty3" /etc/securetty quiet AddRules "tty4" /etc/securetty quiet AddRules "tty5" /etc/securetty quiet AddRules "tty6" /etc/securetty quiet # Security check echo "Updating file check variable : " echo -e "\t- Check suid root file : yes." AddRules "CHECK_SUID_ROOT=yes" /etc/security/msec/security.conf quiet echo -e "\t- Check suid root file integrity (backdoor check) : yes." AddRules "CHECK_SUID_MD5=yes" /etc/security/msec/security.conf quiet echo -e "\t- Check suid group file : no." AddRules "CHECK_SUID_GROUP=no" /etc/security/msec/security.conf quiet echo -e "\t- Check world writable file : yes." AddRules "CHECK_WRITABLE=yes" /etc/security/msec/security.conf quiet echo -e "\t- Check unowned file : no." AddRules "CHECK_UNOWNED=no" /etc/security/msec/security.conf quiet echo -e "\t- Check promiscuous mode : no." AddRules "CHECK_PROMISC=yes" /etc/security/msec/security.conf quiet echo -e "\t- Check listening port : yes." AddRules "CHECK_OPEN_PORT=yes" /etc/security/msec/security.conf quiet echo -e "\t- Check for dangerous .[sr]hosts file : yes." AddRules "CHECK_RHOST=yes" /etc/security/msec/security.conf quiet echo -e "\t- Check passwd file integrity : yes." AddRules "CHECK_PASSWD=yes" /etc/security/msec/security.conf quiet echo -e "\t- Check shadow file integrity : yes." AddRules "CHECK_SHADOW=yes" /etc/security/msec/security.conf quiet echo -e "\t- Security warning on tty : \"yes\" :" AddRules "TTY_WARN=no" /etc/security/msec/security.conf quiet echo -e "\t- Security warning in syslog : \"yes\" :" AddRules "SYSLOG_WARN=yes" /etc/security/msec/security.conf # end security check # Crontab echo "Adding permission check in crontab (scheduled every midnight) :" AddRules "0 0-23 * * * root nice --adjustment=+19 /etc/security/msec/cron-sh/file_check.sh" /etc/crontab echo -n "Running lilo to record new config : " /sbin/lilo >& /dev/null echo -e "done.\n" # /etc/profile echo "Setting secure level variable to 3 :" AddRules "SECURE_LEVEL=3" /etc/profile echo "Setting umask to 022 (user = rw, group = r, o = r) :" AddRules "umask 022" /etc/profile echo "Adding a \"normal\" PATH variable : " AddRules "PATH=\$PATH:/usr/X11R6/bin" /etc/profile