gs1 128 vb.net Understanding Password Policies in .NET

Painting Code 128 Code Set C in .NET Understanding Password Policies

Understanding Password Policies
Generating Code 128 Code Set C In .NET Framework
Using Barcode printer for ASP.NET Control to generate, create Code 128C image in ASP.NET applications.
www.OnBarcode.com
Bar Code Creator In .NET Framework
Using Barcode encoder for ASP.NET Control to generate, create barcode image in ASP.NET applications.
www.OnBarcode.com
Your domain s password policy is configured by a GPO scoped to the domain. Within the GPO, in the Computer Configuration\Policies\Windows Settings\ Security Settings\ Account Policies \Password Policy node, you can configure the policy settings that determine password requirements. The Password Policy node is shown in Figure 8-1.
Printing Code 128B In Visual C#
Using Barcode printer for VS .NET Control to generate, create Code 128 Code Set B image in .NET framework applications.
www.OnBarcode.com
Code 128 Generator In VS .NET
Using Barcode encoder for VS .NET Control to generate, create Code 128A image in VS .NET applications.
www.OnBarcode.com
8
Paint Code 128B In Visual Basic .NET
Using Barcode creator for VS .NET Control to generate, create Code 128B image in .NET framework applications.
www.OnBarcode.com
Bar Code Drawer In .NET
Using Barcode encoder for ASP.NET Control to generate, create barcode image in ASP.NET applications.
www.OnBarcode.com
Authentication
Generating Barcode In VS .NET
Using Barcode printer for ASP.NET Control to generate, create bar code image in ASP.NET applications.
www.OnBarcode.com
Printing Code 128 In .NET
Using Barcode creation for ASP.NET Control to generate, create Code-128 image in ASP.NET applications.
www.OnBarcode.com
Figure 8-1
UPCA Generation In Visual Studio .NET
Using Barcode maker for ASP.NET Control to generate, create Universal Product Code version A image in ASP.NET applications.
www.OnBarcode.com
EAN13 Creator In .NET Framework
Using Barcode generator for ASP.NET Control to generate, create UPC - 13 image in ASP.NET applications.
www.OnBarcode.com
The Password Policy node of a GPO
USS-128 Creation In .NET
Using Barcode creation for ASP.NET Control to generate, create EAN 128 image in ASP.NET applications.
www.OnBarcode.com
Print USD-3 In Visual Studio .NET
Using Barcode creator for ASP.NET Control to generate, create Code 93 Full ASCII image in ASP.NET applications.
www.OnBarcode.com
You can understand the effects of the policies by considering the life cycle of a user password. A user will be required to change his or her password within the number of days specified by the Maximum Password Age policy setting. When the user enters a new password, the length of the new password will be compared to the number of characters in the Minimum Password Length policy. If the Password Must Meet Complexity Requirements policy is enabled, the password must contain at least three of four character types:
EAN13 Maker In Objective-C
Using Barcode printer for iPad Control to generate, create EAN-13 Supplement 5 image in iPad applications.
www.OnBarcode.com
GS1 DataBar-14 Generator In .NET
Using Barcode encoder for VS .NET Control to generate, create GS1 DataBar Expanded image in .NET framework applications.
www.OnBarcode.com
Uppercase for example, A Z Lowercase for example, a z Numeric 0 9 Nonalphanumeric symbols such as !, #, %, or &
Bar Code Creation In None
Using Barcode maker for Online Control to generate, create bar code image in Online applications.
www.OnBarcode.com
Decoding Data Matrix ECC200 In Visual C#
Using Barcode decoder for Visual Studio .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
If the new password meets requirements, Active Directory puts the password through a mathematical algorithm that produces a representation of the password called the hash code. The hash code is unique; no two passwords can create the same hash code. The algorithm used to create the hash code is called a one-way function. You cannot put the hash code through a reverse function to derive the password. The fact that a hash code, and not the password itself, is stored in Active Directory helps increase the security of the user account. Occasionally, applications require the ability to read a user s password. This is not possible because, by default, only the hash code is stored in Active Directory. To support such applications, you can enable the Store Passwords Using Reversible Encryption policy. This policy is not enabled by default, but if you enable the policy, user passwords are stored in an encrypted form that can be decrypted by the application. Reversible encryption significantly reduces the security of your domain, so it is disabled by default, and you should strive to eliminate applications that require direct access to passwords. Additionally, Active Directory can check a cache of the user s previous hash codes to make sure that the new password is not the same as the user s previous passwords. The number of previous passwords against which a new password is evaluated is determined by the Enforce Password History policy. By default, Windows maintains the previous 24 hash codes.
Matrix Barcode Creation In VS .NET
Using Barcode encoder for Visual Studio .NET Control to generate, create 2D Barcode image in Visual Studio .NET applications.
www.OnBarcode.com
Generate Data Matrix In None
Using Barcode drawer for Software Control to generate, create Data Matrix image in Software applications.
www.OnBarcode.com
Lesson 1: Configuring Password and Lockout Policies
UPCA Creation In VB.NET
Using Barcode generation for VS .NET Control to generate, create UCC - 12 image in .NET framework applications.
www.OnBarcode.com
GS1 - 13 Creation In VB.NET
Using Barcode generator for Visual Studio .NET Control to generate, create EAN-13 Supplement 5 image in .NET framework applications.
www.OnBarcode.com
If a user is determined to reuse a password when the password expiration period occurs, he or she could simply change the password 25 times to work around the password history. To prevent that from happening, the Minimum Password Age policy specifies an amount of time that must pass between password changes. By default, it is one day. Therefore, the determined user would have to change his or her password once a day for 25 days to reuse a password. This type of deterrent is generally successful at discouraging such behavior. Each of these policy settings affects a user who changes his or her password. The settings do not affect an administrator using the Reset Password command to change another user s password.
Understanding Account Lockout Policies
An intruder can gain access to the resources in your domain by determining a valid user name and password. User names are relatively easy to identify because most organizations create user names from an employee s e-mail address, initials, combinations of first and last names, or employee IDs. When a user name is known, the intruder must determine the correct password by guessing or by repeatedly logging on with combinations of characters or words until the logon is successful. This type of attack can be thwarted by limiting the number of incorrect logons that are allowed. That is exactly what account lockout policies achieve. Account lockout policies are located in the node of the GPO directly below Password Policy. The Account Lockout Policy node is shown in Figure 8-2.
Figure 8-2
Copyright © OnBarcode.com . All rights reserved.