L0Pht Er How To Use LC3
L0Pht Er Full Password Report
L0Pht Er Install LC3 On

As you can see, LC3 creates separate columns for the LAN Manager (LM) and NT LAN Manager (NTLM) passwords.

Informa PLCs registered office is 5 Howick Place, London SW1P 1WG.

Im preaching to the converted when I say that one of the best ways to secure your network is through strong user passwords.

However, getting users to create strong passwords is easier said than done.

Improving the quality of passwords in your organization requires a multipronged approach.

You need to publish a written policy that defines what strong passwords are and requires users to select and implement them.

You also need to educate users about proven methods for remembering strong passwords (e.g., a pass phraseusually a sentence from which you use the first letter of each word to construct your password).

Then, you need to follow up regularly and verify that users have created high-quality passwords that someone else cant easily guess.

L0Pht Er Full Password Report

You simply cant get a full password report because Windows XP, Windows 2000, and Windows NT use hash algorithms to protect passwords stored in the SAM or Active Directory (AD).

Therefore, you need a password-cracking tool such as stakes L0phtCrack.

The latest incarnation of the famous L0phtCrack tool, LC3, lets you import the password hashes from AD on a Win2K domain controller (DC) or from an NT DCs SAM.

To learn more about password hashing, see Cracking User Passwords in Windows 2000,, InstantDoc ID 9186.) You can then subject those hashed passwords to a variety of cracking techniques to reveal weaknesses.

Keep in mind, however, that the purpose of requiring strong passwords isnt to defeat LC3you cant defeat a properly designed password cracker.

To defeat LC3, you must prevent intruders from getting a copy of your password hashes in the first place.

To learn more about such measures, see my article Protect Your Passwords,, InstantDoc ID 3844.) Strong passwords will help you defeat other users and attackers who try to guess the password by attempting to log on to your computers.

With LC3, you can simulate the same tactics attackers use when they try to guess a passwordonly millions of times faster.

L0Pht Er How To Use LC3

I show you how to use LC3 to effectively audit your passwords.

You can download a 15-day evaluation copy of LC3 at ).

L0Pht Er Install LC3 On

To obtain the hashes, youll need to install LC3 on one of your Win2K DCs (from which its duplicated to the other DCs).

If youve enabled Syskey on your NT DCs, youll also need to install LC3 on one of your NT DCs.

On Syskey-protected computers, you can install LC3 on one DC and use the Import from local machine command to get a copy of your domains password hashes.

This method requires administrator authority and uses sophisticated Win32 programming techniques to extract password hashes from OS memory, where they have already been decrypted.

In that case, youll need to install Win2K or NT (whichever is appropriate) on a test machine.

Make the computer a DC in your domain, which will create a copy of the domains SAM or AD database on the scratch computer.

Run l0phtcracksetup02.exe, accept all the defaults, and cancel the Password Crack Wizard.

Now, in the unlikely case that LC3 crashes or corrupts your computer, you wont affect your network.

L0Phtcrack Password Cracker