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Securing Web Services on Linux: Strategies for Apache, DNS, and Network Applications

In this lesson, you will explore essential security strategies for web services and applications on Linux platforms. Learn how to secure common web applications like Apache Web Server, Squid, DNS BIND, and mail agents. We will cover the configuration of secure web servers, the use of digital certificates, and the role of certificate authorities (CAs). Additionally, discover techniques for restricting access to specific IP networks and directories, as well as implementing firewall rules for MySQL database management. Enhance your understanding of the LAMP stack and networked application security.

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Securing Web Services on Linux: Strategies for Apache, DNS, and Network Applications

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Presentation Transcript

  1. Security Strategies in Linux Platforms and Applications Lesson 9 Networked Application Security

  2. Learning Objective • Describe how to secure Web services, applications, and access.

  3. Key Concepts • Common Web applications and services, such as Apache Web Server, Squid, DNS BIND, and mail agents • Configuring secure Web servers and Web sites • Digital certificates and certificate authorities (CAs)

  4. DISCOVER: CONCEPTS

  5. Web Services and Applications

  6. The LAMP Stack

  7. Asterisk

  8. DISCOVER: PROCESS

  9. Configure a Secure Apache Web Server • Method 1 • Limit Web site accessibility to a certain IP address network: Order deny,allow Deny from all Allow from 192.168.0.0/255.255.255.0

  10. Configure a Secure Apache Web Server • Method 2 • Restrict access to a specific Web site or directory: AuthName “Authorized users only” AuthType Digest AuthUsersFile /etc/httpd/conf.d/apacheusers Require valid-user

  11. Configure Protection on a Web Site

  12. Port Forwarding with SSH MySQL database management Graphical user interface (GUI) tool OpenSSH Server (Port 22) Firewall blocks all traffic to Port 3306 MySQL Database Server (Port 3306) Port 22 Port 3306

  13. DISCOVER: ROLES

  14. DNS Organization of the Internet

  15. An Internal Network, a DMZ, and the Internet

  16. DISCOVER: RATIONALE

  17. Why Limit Network Printers? • Monitor usage • Must be able to track who prints what for management and budgetary reasons • Contain costs • Color printing is still much more expensive than b&w; limit who can print to networked color printers • Prevent a security breach • An attacker can hijack a networked printer and take control of the entire network

  18. Summary • Common Web applications and services, such as Apache Web Server, Squid, DNS BIND, and mail agents • Configuring secure Web servers and Web sites • Digital certificates and certificate authorities (CAs)

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