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(b) Add: password=some_password
當(dāng)與restricted聯(lián)合用,且正常引導(dǎo)時(shí),需要用戶輸入密碼,你也要確保lilo.conf
文件不能被不屬于root的用戶可讀,也免看到密碼明文。下面是例子:
編輯/etc/lilo.conf加:
====
boot=/dev/sda
map=/boot/map
install=/boot/boot.b
prompt
timeout=50
Default=linux
restricted ?add this line.
password=some_password ?add this line.
image=/boot/vmlinuz-2.2.12-20
label=linux
initrd=/boot/initrd-2.2.12-10.img
root=/dev/sda6
read-only
[root@deep]# chmod 600 /etc/lilo.conf (不再能被其他用戶可讀).
[root@deep]# /sbin/lilo -v (更新lilo配置).
[root@deep]# chattr +i /etc/lilo.conf(阻止該文件被修改)
◆17、禁止 Control-Alt-Delete 重啟動(dòng)機(jī)器命令
[root@deep]# vi /etc/inittab
ca::ctrlaltdel:/sbin/shutdown -t3 -r now
To
#ca::ctrlaltdel:/sbin/shutdown -t3 -r now
[root@deep]# /sbin/init q
◆18、重新設(shè)置/etc/rc.d/init.d/目錄下所有文件的許可權(quán)限
[root@deep]# chmod -R 700 /etc/rc.d/init.d/*
僅僅root可以讀,寫,執(zhí)行上述所有script file.
◆19、The /etc/rc.d/rc.local file
默認(rèn)地,當(dāng)你login到linux server時(shí),它告訴你linux版本名,內(nèi)核版本名和服務(wù)器
主機(jī)名。它給了你太多的信息,如果你就希望得到提示login: ,編輯
/etc/rc.d/rc.local放#在下面的行前面:
# This will overwrite /etc/issue at every boot. So, make any changes you
# want to make to /etc/issue here or you will lose them when you reboot.
#echo "" >; /etc/issue
#echo "$R" >;>; /etc/issue
#echo "Kernel $(uname -r) on $a $(uname -m)" >;>; /etc/issue
#
#cp -f /etc/issue /etc/issue.net
#echo >;>; /etc/issue
然后,做下面的事情:
[root@deep]# rm -f /etc/issue
[root@deep]# rm -f /etc/issue.net
[root@deep]# touch /etc/issue
[root@deep]# touch /etc/issue.net
◆20、被root擁有的程序的位。
移走那些被root擁有程序的s位標(biāo)志,當(dāng)然有些程序需要這個(gè),用命令‘chmod a-s’完成這個(gè)。
注:前面帶(*)號(hào)的那些程序一般不需要擁有s位標(biāo)志。
[root@deep]# find / -type f \( -perm -04000 -o -perm -02000 \) \-exec ls –lg {} \;
-rwsr-xr-x 1 root root 33120 Mar 21 1999 /usr/bin/at
*-rwsr-xr-x 1 root root 30560 Apr 15 20:03 /usr/bin/chage
*-rwsr-xr-x 1 root root 29492 Apr 15 20:03 /usr/bin/gpasswd
-rwsr-xr-x 1 root root 3208 Mar 22 1999 /usr/bin/disable-paste
-rwxr-sr-x 1 root man 32320 Apr 9 1999 /usr/bin/man
-r-s--x--x 1 root root 10704 Apr 14 17:21 /usr/bin/passwd
-rws--x--x 2 root root 517916 Apr 6 1999 /usr/bin/suidperl
-rws--x--x 2 root root 517916 Apr 6 1999 /usr/bin/sperl5.00503
-rwxr-sr-x 1 root mail 11432 Apr 6 1999 /usr/bin/lockfile
-rwsr-sr-x 1 root mail 64468 Apr 6 1999 /usr/bin/procmail
-rwsr-xr-x 1 root root 21848 Aug 27 11:06 /usr/bin/crontab
-rwxr-sr-x 1 root slocate 15032 Apr 19 14:55 /usr/bin/slocate
*-r-xr-sr-x 1 root tty 6212 Apr 17 11:29 /usr/bin/wall
*-rws--x--x 1 root root 14088 Apr 17 12:57 /usr/bin/chfn
*-rws--x--x 1 root root 13800 Apr 17 12:57 /usr/bin/chsh 本新聞共 7頁,當(dāng)前在第 4頁 1 2 3 4 5 6 7 |
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