‘壹’ 电脑怎么设置搞强度登陆密码,以防止别人登录谢谢!
这个我提供一个办法给你,你新建一个txt文件,然后在里面编辑shutdown -s -t 60。最后把txt后缀改为bat,把这个文件放到开始——>启动里,这样做的结果是开机后会加载这个文件使计算机在60秒内关机。模拟成传说中的病毒“冲击波”的发毒症状。你自己用的时候可以在60秒内输入shutdown -a使命令失效。这样你可以对同学说机器中病毒了,这样就不会被人家说不给面子了,又可以保护自己的机器了。
在桌面上空白处(当然强烈建议不要放在桌面上)右键——新建——文本文档
然后出现一个叫”新建 文本文档.txt“的东西在桌面上,双击进去编辑“shutdown -s -t 60”然后保存。出去把文件的后缀txt改为bat,(没有txt??好办,随便开一个文件夹,在顶部工具拦里选文件夹选项——查看,有一项叫“隐藏已知文件类型的扩展名”的把勾去掉)。改好以后,用鼠标左键把文件拖动(不会什么是拖动??晕倒,把鼠标点到图标上,按住左键不动,然后移动鼠标,这就叫拖动)到开始——所有程序——启动里就OK了,怕人看见这个文件??点中文件——右键——属性,把隐藏前面的勾打上。还能看见一个模糊的图标??晕倒你不是说不会的嘛??这都能搞出来,再随便开一个文件夹,在顶部工具拦里选文件夹选项——查看,有一项叫“隐藏文件和文件夹”选中显示所有的文件和文件夹就可以了。
开机的时候 开始——运行——shutdown -a问题解决了
或者,你如果嫌麻烦的话,可以照上面的方法新建一个bat文件,只不过把内容从shutdown -s -t 60改为shutdown -a就好了。
你开机的时候双击他就可以取消关机的命运了。
呵呵,看我为你写的这么详细,你怎么也给加个几十分高兴高兴(兴奋到晕倒ing)吧,哈哈!!
‘贰’ 开机密码强度设置
控制面板 -> 管理工具 -> 本地安全策略 -> 账户策略 -> 密码策略
密码必须符合复杂性要求--已启用
密码长度最小值--设几位有几位,0为没有最小值
‘叁’ 如何设置具有强度的密码
找到password requisite pam_cracklib.so在后面可以加 difok=x(要x个不同字符) minlen=x(最小密码长度) ucredit=-x(最少x个大写字母) lcredit=-x(最少x个小写字母) dcredit=-x (最少x个数字)dictpath=/usr/share/cracklib/pw_dict时间在[root@localhost ~]# vim /etc/login.defs,PASS_MAX_DAYS 99999 (最大什么时候过期)PASS_MIN_DAYS 0 (最小什么事后过期)PASS_MIN_LEN 5 (密码最小长度)PASS_WARN_AGE 7 (警告天数)我们在使用linux系统设置密码的时候,经常遇到这样的问题,系统提示:您的密码太简单,或者您的密码是字典的一部分。那么系统是如何实现对用户的密码的复杂度的检查的呢?系统对密码的控制是有两部分(我知道的)组成:
1 cracklib
2 login.defs
声明:login.defs主要是控制密码的有效期。对密码进行时间管理。此处不细谈login.defs --shadow password suite configuration,pam_cracklib.so 才是控制密码复杂度的关键文件
redhat公司专门开发了cracklib这个安装包来判断密码的复杂度可以rpm -ql cracklib查看
密码的复杂度的判断是通过pam模块控制来实现的,具体的模块是pam_cracklibpam_cracklib 的参数介绍:debug,This option makes the mole write information to syslog(3) indicating the behavior of the mole (this option does not write password information to the log file).
type=XXX,The default action is for the mole to use the following prompts when requesting passwords: "New UNIX password: " and "Retype UNIX password: ". The default word UNIX can be replaced with this option. retry=N,Prompt user at most N times before returning with error. The default is 1 ,difok=N,This argument will change the default of 5 for the number of characters in the new password that must not be present in the old password. In addition, if 1/2 of the characters in the new password are different then the new password will be accepted anyway.
difignore=N,How many characters should the password have before difok will be ignored. The default is 23. minlen=N,The minimum acceptable size for the new password (plus one if credits are not disabled which is the default). In addition to the number of characters in the new password, credit (of +1 in length) is given for each different kind of character (other, upper, lower and digit). The default for this parameter is 9 which is good for a old style UNIX password all of the same type of character but may be too low to exploit the added security of a md5 system. Note that there is a pair of length limits in Cracklib itself, a "way too short" limit of 4 which is hard coded in and a defined limit (6) that will be checked without reference to minlen. If you want to allow passwords as short as 5 characters you should not use this mole. dcredit=N(N >= 0) This is the maximum credit for having digits in the new password. If you have less than or N digits, each digit will count +1 towards meeting the current minlen value. The default for dcredit is 1 which is the recommended value for minlen less than 10.(N < 0) This is the minimum number of digits that must be met for a new password.ucredit=N,(N >= 0) This is the maximum credit for having upper case letters in the new password. If you have less than or N upper case letters each letter will count +1 towards meeting the current minlen value. The default for ucredit is 1 which is the recommended value for minlen less than 10.(N > 0) This is the minimum number of upper case letters that must be met for a new password.lcredit=N(N >= 0) This is the maximum credit for having lower case letters in the new password. If you have less than or N lower case letters, each letter will count +1 towards meeting the current minlen value. The default for lcredit is 1 which is the recommended value for minlen less than 10,(N < 0) This is the minimum number of lower case letters that must be met for a new password.ocredit=N,(N >= 0) This is the maximum credit for having other characters in the new password. If you have less than or N other characters, each character will count +1 towards meeting the current minlen value. The default for ocredit is 1 which is the recommended value for minlen less than 10.(N < 0) This is the minimum number of other characters that must be met for a new password.use_authtok,This argument is used to force the mole to not prompt the user for a new password but use the one provided by the previously stacked password mole. dictpath=/path/to/dic,Path to the cracklib dictionaries. dictpath=/path/to/dict //注:密码字典,这个是验证用户的密码是否是字典一部分的关键。
‘肆’ 电脑有密码还是被破解了,如何加强密码强度
增强密码强度,从以下几方面入手:
1、复杂性
密码字符的种类尽可能多,大、小写字母,数字,符号等这几种都要有。而且,字母最好是无规律,不推荐用现成的英语单词;数字也不要与个人信息相关。
2、密码的长度尽可能长。
‘伍’ 如何设置强度高的密码
相对较长,使用大小写字母、数字和符号的组合。密码越长,使用的符号种类越多,就越难破解。
设密码有几个要点就是:
1、密码的位数不要短于6位,使用大写字母和小写字母、标点和数字的集合。
2、不要以任何单词、生日、数字、手机号做为密码,这种太容易就能破解了,比如说生日吧,看似有8位,但我们一般都是出生在19XX的,一年只有12个月,一个月最多只有31天,XXX,不要几分钟就可以试出来,还不需要程序来算。
3、密码中的英文最好有大小之分。
4、如果在程序允许的情况下,最好能加上英文半角的符号。
(5)修改电脑密码强度扩展阅读:
密码保存
一个计算机用户通常有十几个密码保护的帐号,并使用同一个密码。而那些试图使用不同密码的用户往往由于密码太多,而记不清哪个帐户和哪个密码相对应。比较好且实际的建议是在一个低安全性的帐号(如bbs)使用简单的密码,在高安全性的程序(如在线银行)使用强密码。
一旦密码被写下来,用户不能将它放在一些明显的地方,如通信录,抽屉等。最糟糕可能也是最常见的情况是密码被写在一张便条纸上,放在计算机附近。比较安全的做法是放在保险箱里。
‘陆’ WINDOWS XP的帐号密码强度要求如何设定
设定WINDOWS XP的帐号密码长度要求的方法:
1、打开控制面板,左键双击管理工具;