Linux system security Settings shell script

#!/bin/sh# desc:setup Linux system security# powered by Www.lvtao.net#account setuppasswd-L XFSPASSWD-L NEWSPASSWD-L NSCDPASSWD-L DBUSPASSWD-L VCSAPASSWD-L GAMESPASSWD-L NOBODYPASSWD-L AVAHIPASSWD-L HALDAEMONPASSWD-L GOPHERPASSWD-L FTPPASSWD-L MAILNULLPASSWD-L PCAPPASSWD-L MAILPASSWD-L SHUTDOWNPASSWD-L HALTPASSWD-L UUCPPASSWD-Loperatorpasswd-L SYNCPASSWD-L ADMPASSWD-l lp# chattr/etc/passwd/etc/shadowchattr+i/etc/passwdchattr+i/etc/shadowchattr+i/etc/groupchattr+i/etc/gshadow# AddContinueInput failure3, passwd unlock Time5minitesed-I.'S#auth required Pam_env.so#auth required Pam_env.sonauth required pam_tally.so onerr=fail deny=3 unlock_time= 300nauth required/lib/security/$ISA/pam_tally.so onerr=fail deny=3 unlock_time=300#'/etc/pam.d/system-auth# System Timeout5minite Auto Logoutecho"tmout=300">>/etc/profile# would system save History command list toTensed-I."s/histsize=1000/histsize=10/"/etc/profile# Enable/etc/profile go!Source/etc/profile# Add Syncookie enable/etc/Sysctl.confecho"Net.ipv4.tcp_syncookies=1">>/etc/Sysctl.confsysctl-P # exec sysctl.conf enable# optimizer sshd_configsed-I."s/#MaxAuthTries 6/maxauthtries 6/"/etc/ssh/sshd_configsed-I."s/#UseDNS yes/usedns no/"/etc/ssh/sshd_config# limit chmod important Commandschmod the/bin/Pingchmod the/usr/bin/Fingerchmod the/usr/bin/Whochmod the/usr/bin/Wchmod the/usr/bin/Locatechmod the/usr/bin/Whereischmod the/sbin/Ifconfigchmod the/usr/bin/Picochmod the/bin/Vichmod the/usr/bin/Whichchmod the/usr/bin/Gccchmod the/usr/bin/Makechmod the/bin/rpm# History securitychattr+a/root/. Bash_historychattr+i/root/. bash_history# Write important command Md5cat> List <<"EOF"&&/bin/ping/bin/finger/usr/bin/who/usr/bin/w/usr/bin/locate/usr/bin/whereis/sbin/ifconfig/bin/pico/bin /vi/usr/bin/vim/usr/bin/which/usr/bin/gcc/usr/bin/make/bin/rpm EOF forIinch' Cat list ' Do if[!-X $i];then Echo"$i not found,no md5sum!" Elsemd5sum $i >>/var/log/' hostname '. Logfidonerm-F List

Execute SH security.sh

Linux system security Settings shell script