c# barcode generator example ISP Internet ISP s IAS Proxy in Visual C#.NET

Make QR in Visual C#.NET ISP Internet ISP s IAS Proxy

ISP Internet ISP s IAS Proxy
Denso QR Bar Code Maker In C#
Using Barcode generation for .NET framework Control to generate, create Denso QR Bar Code image in .NET framework applications.
www.OnBarcode.com
QR Code JIS X 0510 Reader In C#
Using Barcode scanner for Visual Studio .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
IAS Contoso Forest
Generate Barcode In C#
Using Barcode generator for .NET Control to generate, create bar code image in Visual Studio .NET applications.
www.OnBarcode.com
Reading Bar Code In Visual C#
Using Barcode decoder for .NET Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
Client Computer
Create QR Code In Visual Studio .NET
Using Barcode printer for ASP.NET Control to generate, create QR Code image in ASP.NET applications.
www.OnBarcode.com
Print Denso QR Bar Code In .NET
Using Barcode creation for VS .NET Control to generate, create QR Code ISO/IEC18004 image in VS .NET applications.
www.OnBarcode.com
Humongous Insurance Forest
QR Code Drawer In Visual Basic .NET
Using Barcode encoder for .NET Control to generate, create Denso QR Bar Code image in VS .NET applications.
www.OnBarcode.com
2D Barcode Generation In C#
Using Barcode creation for Visual Studio .NET Control to generate, create 2D Barcode image in VS .NET applications.
www.OnBarcode.com
Figure 10-16 IAS and multiple forests
Drawing UCC - 12 In C#.NET
Using Barcode encoder for VS .NET Control to generate, create EAN / UCC - 14 image in VS .NET applications.
www.OnBarcode.com
Making EAN13 In Visual C#
Using Barcode drawer for .NET Control to generate, create EAN13 image in .NET framework applications.
www.OnBarcode.com
Lesson 2
Print Barcode In Visual C#.NET
Using Barcode generator for VS .NET Control to generate, create bar code image in Visual Studio .NET applications.
www.OnBarcode.com
Code-27 Generation In Visual C#.NET
Using Barcode encoder for VS .NET Control to generate, create Code 2 of 7 image in .NET framework applications.
www.OnBarcode.com
Designing a Secure Remote Access Strategy for Client Computers 10-41
UPC Code Generation In Java
Using Barcode generator for Android Control to generate, create UPC A image in Android applications.
www.OnBarcode.com
Recognize Code 39 Full ASCII In Java
Using Barcode decoder for Java Control to read, scan read, scan image in Java applications.
www.OnBarcode.com
See Also
QR Code ISO/IEC18004 Creator In Objective-C
Using Barcode drawer for iPad Control to generate, create QR-Code image in iPad applications.
www.OnBarcode.com
Matrix Barcode Encoder In Java
Using Barcode generation for Java Control to generate, create Matrix Barcode image in Java applications.
www.OnBarcode.com
Some IAS options are used to secure and support wireless connectivity. These options are discussed in 12.
1D Printer In .NET
Using Barcode maker for VS .NET Control to generate, create 1D Barcode image in Visual Studio .NET applications.
www.OnBarcode.com
Drawing QR In VB.NET
Using Barcode generator for Visual Studio .NET Control to generate, create QR Code image in Visual Studio .NET applications.
www.OnBarcode.com
Network Access Quarantine Control Considerations
GTIN - 12 Drawer In .NET Framework
Using Barcode maker for .NET Control to generate, create UPCA image in VS .NET applications.
www.OnBarcode.com
Recognize UPC A In Visual Basic .NET
Using Barcode decoder for Visual Studio .NET Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
Network Access Quarantine Control is a new feature of Windows Server 2003 that can prevent access to a private network until the configuration of a remote computer has been validated. Validation is performed by comparing the remote computer against a list of required attributes provided in a script. The script is created by network admin istrators in compliance with a security policy. For example, administrators might want to ensure that clients have the latest service packs and hotfixes or up-to-date antivirus software before they connect to the corporate network. The process works like this: 1. A remote access computer requests a connection. 2. The user is authenticated. 3. The remote computer is assigned an IP address. 4. The connection is placed in quarantine mode, which limits network access by using IP filters. 5. The provided script is run on the RAS client computer. 6. After the script completes the notifier component on the RAS client, it notifies the listener component on the remote access server that the RAS client either met the quarantine policy or failed to meet it. If the client fails the policy check or the noti fier does not respond within a predetermined period of time, the client will be dis connected. If the client passes the check, the quarantine IP filter will be removed. Figure 10-17 shows the network components. The client in the figure can be Windows XP, Windows Server 2003, Windows 2000, Windows Millennium Edition, or Windows 98 Second Edition. RADIUS provides central authentication, authorization, and accounting for the VPN. In Figure 10-17, note the following required components:
A remote client that has been provided with a Connection Manager profile created with the Windows Server 2003 Connection Manager Administration Kit. The profile contains a network policy compliance script and a notifier component. A remote access server running Windows Server 2003 and the quarantine notifica tion listener service. A RADIUS server running Windows Server 2003 and Internet Authentication Ser vice (IAS) configured with a quarantine remote access policy. The policy specifies two quarantine settings: the IP filter and the quarantine timeout setting.
10-42
10
Designing a Secure Client Infrastructure
IAS Server with quarantine policy
Remote Access Server with listener service Internet
Active Directory Client Computer Internal Network Web server with configuration tools
Figure 10-17 Network components for quarantine control
The network access quarantine notifier and listener components (rqc.exe and rqs.exe) as well as a sample quarantine script are provided in the Windows Server 2003 Resource Kit Tools and are downloadable from the Downloads page of the Microsoft Web site at http://www.microsoft.com/downloads/details.aspx familyid=9d467a69-57ff-4ae7-96ee b18c4790cffd&displaylang=en. Additionally, you can use the Windows Server 2003 SDK to write your own custom components.
Note
Guidelines for Designing an Authentication and Authorization Strategy Using IAS
Follow these guidelines to design authentication and authorization strategies when using IAS:
When the user account dial-in permission is set to Control Access Through Remote Access Policy, specify connection access as dependent on Windows Groups. Oth erwise, all user accounts will be allowed access if they meet the conditions and profile constraints of a remote access policy. Always set the user account dial-in permission to Control Access Through Remote Access Policy where possible. This eases the management burden because access can be managed by Windows groups instead of the administrator having to visit each user account page. Configure shared password settings:
Select the Message Authenticator attribute with the shared secret when PAP, MS-CHAP, and MS-CHAPv2 authentication protocols are allowed. This param eter ensures the entire RADIUS message is encrypted. (When EAP authentica tion types are used, the Message Authenticator attribute is used by default.)
Lesson 2
Designing a Secure Remote Access Strategy for Client Computers 10-43
Create 22-character or longer shared secrets composed of a random sequence of letters, numbers, and punctuation. Change this password often. This will help protect the IAS server and the RADIUS clients from password-cracking attacks. Configure each RADIUS client, RADIUS server, and RADIUS Proxy pair (each connection path) with a different shared secret. Do not specify RADIUS clients by address range. If you specify RADIUS cli ents by address range, you must use the same shared password for all RADIUS clients and this is not a good security practice.
Do not allow PAP authentication. PAP passwords are passed in the clear. Where possible, specify EAP for authentication and use EAP types that require cer tificates. Configure Network Access Quarantine Control. Specify the use of Terminal Services for remote administration, or specify the use of IPSec between the administrative workstation and the IAS computer. Configure IPSec policies to encrypt RADIUS traffic between RADIUS clients and IAS.
Copyright © OnBarcode.com . All rights reserved.