c# barcode generator example Designing Security for IIS in C#

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Designing Security for IIS
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copy and paste, or third-party Web publishing products. There are two security issues with all of these methods: managing authentication and authorization for the file move ment, and securing the data. Content can also be modified directly on the server, although this is not recommended. Regardless of the method you choose, unautho rized users or guests should not be able to make content changes on the Web site. The entire process of content management must be secured from ensuring that proposed changes are approved to securely moving the content from test servers to the Web site. To design secure content management, consider the following items:
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The content management approval process New content for Web sites must be approved. A process should be developed and enforced that identifies who can approve changes to site content. Content update production New content should be developed and tested on a test server. Developers should not have the ability to write to the production server, and all changes should be made on the test server first, and then content can be moved to the Web server. Automatic updates of content Content should be moved to the Web server in a secure manner. Automatic updates from test servers is not a secure method unless the test server is as secure as the production server. It makes no sense to allow changes made to an insecure server to automatically propagate to the pro duction server. If the test server is compromised, any content the attacker designs will be automatically posed to the production Web server. Instead, consider trans fer of content changes to a secondary server and then, after inspection, movement to the production site. Updating content using FTP An FTP site or sites for updating content should be created on a separate server from the production Web server. Access to FTP sites can be authenticated, but authentication credentials will traverse the network using clear text. Consider the following options:
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Using a VPN to access the FTP server Limiting access to the FTP site to specific servers
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Updating content using FTP user isolation When designing a content refresh strategy using FTP, consider using FTP user isolation. The user with credentials for this site cannot traverse the directory structure to access other sites.
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See Also
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For more information about FTP user isolation, see the Guidelines for Designing Authentication Using RADIUS section in Lesson 2 of this chapter.
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Securing data transfer Consider using IPSec policies to authenticate both the client and server computer, protect user credentials, and protect the content while it crosses the network.
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Lesson 1
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Designing IIS Security Baselines 13-21
Guidelines for Designing Monitoring and Maintenance Strategies for IIS
Designing monitoring and maintenance strategies for IIS combines the monitoring and maintenance strategies described for all networked systems such as firewalls and intrusion detection and adds Windows-specific operating system security and IIS-spe cific strategies such as backing up the metabase and managing IIS-specific logs. It is also necessary to include a design for secure administrative practices. The following sections explain the components of a backup strategy for IIS, describe IIS log file formats, and then provide guidelines for designing monitoring and respond ing to alerts; reviewing security policies, processes, and procedures; encrypting com munications; and designing secure remote administration. This topic addresses only IIS-specific issues.
How the Entire Process of Designing Monitoring and Maintenance Strategies Works
This lesson teaches how to design monitoring and maintenance strategies for IIS. However, it s important to know that the entire design should include the follow ing tasks: 1. Design a backup strategy for IIS. 2. Design a strategy for applying service packs and security patches. 3. Ensure the Windows Server 2003 auditing design includes object auditing for the Web server. 4. Design the use of file and folder access Systems Access Control Lists (SACLs) for Web site content. Include at least monitoring of modification and deletion of content. 5. Review the security policy, process, and practices to ensure security policy compliance, and recommend changes to security policy as necessary. 6. Use intrusion detection systems to monitor network activity. A correctly configured and monitored intrusion detection system can alert on suspicious events. A trained individual or team can use this information to prevent intru sions or reduce their impact. 7. Specify the configuration of Windows Server 2003 logs on the IIS server. 8. Specify logging of Web site access. Design with log type, specifications in conjunction with security, performance, and log size in mind. 9. Design strategies for monitoring log content and responding to alerts. 10. Design secure remote administrative practices.
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