Prohibit illegal user login comprehensive settings

This article, in fact, is a summary. If you are a rookie and there are some files in your computer that you don't want to know about, you'd better not go away. We have set up a variety of ways to prevent illegal users from entering our computer, but in the end those methods can really prevent access to it?

The most primitive method is not in the "Control Panel"-"user" set a valid user name and password, and then power on, you will be prompted to enter the Password dialog box, if there is no password, you can not enter. If you believe it, then you are miserable! Click ESC to get it done. You can block out ESC! But still can enter, turn on the computer, press F5 can enter Safe mode, then your original setting is invalid. You can also block F5 ah. But still can enter, start the computer, suddenly give him a power outage treatment (suddenly turn off the power), reboot, the computer will be prompted to say you want to enter Safe mode? Hey, do you still enter the Safe mode? When you turn on your computer, press SHIFT+F5 to enter DOS mode, and in DOS mode you can modify and edit the. reg file with the Edit command, and then use the regedit command to inject the modified. reg file into the registry to remove all restrictions. You can also password decipher the. pwl file and then walk into your system with a swagger. There are countless ways to prevent illegal entry, and how many of them are playing a role? There will be loopholes where there are procedures, there is no way to ensure that you are absolutely safe. But to enter the difficulty will vary from person to person, the following set of programs, can deal with the general rookie hacker. If you have missed precautions, please give me a lot of advice.

The first step in the beginning is to set up a full-law user name, as mentioned earlier. The following actions are entered:

1.hkey-local-machinenetworklogon

Creates a new DWORD value, named "Mustbevalidated" with the value "1" As the user dialog box is pressed to enter the system.

2.hkey-user. Defaultsoftwaremicorosoftwindowscurremtversionrun

New "string value" named "User Illegal, exit" string value "Rundel.exe User.exe exitwindows"

This step is based on the previous step, which is to automatically shut down if a dialog box is pressed to press ESC.

3. Under MS-DOS mode. Input:

Attrib-r-H MSDOS. SYS

EDIT MSDOS. SYS

In the dialog box that appears, add in the appropriate location:

Bootkeys=0

Bootmenll=0

Bootfailsa

Save to exit. Re-enter: ATTRIB +r +h MSDOS. SYS. The function is to disable access to Safe mode when booting.

Then add the following:

Bootgui=1

Bootmulti=0

Bootwin=1

Save to exit. Re-enter: ATTRIB +b +h MSDOS. SYS. The function is to disable access to DOS mode when booting.

4. Set up the screen saver and set the password. Under C:windowssystem, locate the screen saver and drag him to the Start/program/Start menu. The function is to automatically enter the screen saver state when the boot, require password. Thereby playing the role of the double cipher.

In this case, it is only the win9x of some of the defense system to carry out patches, its role is limited. Through the above steps, has completed the user name and screensaver double password defense, but there is no way to crack. For example, to break the screen saver only a CD can be run automatically can be done. (The cancellation method is to prohibit the CD to run automatically) from the current defense plan, mainly for several aspects, ESC, prohibit access to Safe mode, prohibit access to DOS mode, shielding some power-up keys such as F3F4F5, Prohibit display boot menu (the previous steps are included). This shows how fragile the computer security problem is. Again, such as Win2K with the full spelling input method vulnerability, which in itself is caused by the gene. But what about the number of Help files missing from the computer? For the sake of security, we remove those help files so that we can really plug in this known vulnerability. The Help files are installed in Windows/help, which are: WINIME.CHMWINSP.CHMWINZM.CHMWINPY.CHM be sure to delete them. There's another one in System32/ime/pintlgnt/pintlgnt. The CHM also wants to remove it.

Prohibit illegal user login comprehensive settings