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Enterprise-wide Web Security Res. Assistant Enis Karaarslan Ege Univ. Campus Network Manager ULAK-CSIRT http://csirt.u

Enterprise-wide Web Security Res. Assistant Enis Karaarslan Ege Univ. Campus Network Manager ULAK-CSIRT http://csirt.ulakbim.gov.tr /eng. CONTENT. 1 . Why web security? 2. Network / web system Awareness 3. Secure Coding 4. Enterprise Web Security Model Standardization Awareness

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Enterprise-wide Web Security Res. Assistant Enis Karaarslan Ege Univ. Campus Network Manager ULAK-CSIRT http://csirt.u

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  1. Enterprise-wide Web Security Res. Assistant Enis Karaarslan Ege Univ. Campus Network Manager ULAK-CSIRT http://csirt.ulakbim.gov.tr/eng

  2. CONTENT 1. Why web security? 2. Network / web system Awareness 3. Secure Coding 4. Enterprise Web Security Model • Standardization • Awareness • Training/Testing • Detection • Prevention • Coordination Centre

  3. CONTENT (cont.) • 4. Implementation • 5. Conclusion

  4. 1. Why need web security? • Web (server) usage increases • information systems, devices ...etc • Web incidents increase • Zone-H– 400,000 (%36) increase in 2004 • CSI-FBI – “Computer Crime and Security Survey” - %95 of the correspondents experienced more than 10 web site incidents in 2005

  5. Why need web security? (contd.) • Incidents can cause • Loss of privacy of the customer data • Many results of private data loss • Damage to the enterprise’s/vendor’s reputation • Reaching network devices and ... • Etc.

  6. Major Problems in Web Security • Not enough importance is given for the web security • Traditional security measures are not sufficient • Insufficient web server security • Lack of secure coding

  7. We wouldn’t need so much network security, if we didn’t have such bad software security. Bruce Schneier

  8. To win a war,one must know the waySun TzuThe Art of War

  9. 2. Network / Web System Awareness • Know your enemy (?) • Know yourself, know your assets know what to protect • Know your systems more than the attacker

  10. Network / Web System Awareness (contd.) • Network Awareness the ability of knowing what is happening on the network • Web System Awareness specialized form of network awareness • Web System Awareness • Vulnerability Analysis • System Monitoring

  11. Web System Awareness • Web InfrastructureAwareness Collect and have current system information • Vulnerability Testing Know your visible weaknesses • Monitoring the system See the current status of the system

  12. Web Infrastructure Awareness • Web server IP addresses • Protocols used (https, http) • Site domain names (ex. socrates.ege.edu.tr) • Web server ports (80, 8080, etc) • Operating system (Linux, Windows, etc) • Web server software types and versions (Apache 2.0, IIS 6.0, etc)

  13. Web Infrastructure Awareness (contd) • Content Management Systems (CMS), Portals, Wikis, Bulletin Boards, discussion forums • Web frameworks (PHP, .NET, J2EE, Ruby on Rails, ColdFusion, Perl, etc) and all types of web applications • Application file names • Path to the applications, the directory structures • Application parameters and their types

  14. 3.Secure Coding • Secure coding and vulnerability testing in Software Devolopment Life Cycle (SDLC) • Assurance Models Ex. OWASP Clasp, Microsoft SDL • OWASP Tutorials http://www.owasp.org

  15. Secure Coding (contd.) Can not be implemented perfectly as • Project deadlines • Programmer’s lack of security-awareness But should be focused on. Also network based measures must be considered.

  16. 4. Enterprise Wide Web Security Model Model consists of sub modules: • Standardization • Awareness • Training/Testing • Detection • Prevention • Coordination Centre

  17. Standardization • Policy based Define what is permitted, what is not • Define the preffered system Supply templates, best practices • Secure coding • Documentation

  18. Training / Testing • Workshop Show secure coding examples, attack scenarios • Training Portal • Related secure coding best practices • Guidelines, standards • Test Server • Black box testing • Source code analysis

  19. Intrusion Detection • Intrusion Detection Systems Ex. Snort, Mod Security • Log Control • Honeypot, honeynet

  20. Prevention • Access Control Ex.Network firewall, router ACL • Server Local Security Ex. Mod Security • Reverse Proxy - Web Application Firewall Ex. Mod Security – Mod Rewrite

  21. 5. Implementation • Web Security model on process in Ege University –Turkey • Web Security Group in Ulak-Csirt • Focus on Web System awareness and training • Open source tools • Results will be given

  22. 5.1. Active/Passive System Awaress • Aim is to collect and have the current view of the web system • Active Scan • NMAP – AMAP • Perl Code for the analysis • Open Source Search Engine (future work) • Passive Scan • Snort • Mod Security

  23. Active/Passive System Awaress Model

  24. Test Deployment Schema • IDS configured for web security • WEBIDS • TWEBIDS- knows web system infrastructure

  25. Statistical Results • Alerts collected in one month duration • TWEBIDS which knows the system, has more specific alerts and less false alarms • More statistics in the paper

  26. Vulnerability Analysis

  27. Awareness Portal A web portal for web server administrators and security proffessionals: • Detailed reports about their web systems • Summarized information about the vulnerabilities • Recommend actions to solve the problems. • Track the changes on the systems. • Plan to expand this implementation to control the critical web servers of the universities in the Turkish Acedemic Network ULAKNET.

  28. System Database Schema

  29. 5.2. Training • Workshops, meetings, live demos Web server administrators, web application developers • Habits can’t change easily • Education is a must! • Documentations • Turkish documents - translations http://websecurity.ege.edu.tr http://csirt.ulakbim.gov.tr/dokumanlar • İTU-Ninova – Web Security e-learningcontent http://ninova.itu.edu.tr

  30. 6. Conclusion • For enterprise web security, implement modules of the Web Security Model • Complexity versus protection • Select the modules which suite your enterprise • Primary objectives for the enterprise wide web security should be: • Web system awareness • Training web server administrators, web programmers

  31. Conclusion (contd.) • Systems should be monitored for Intrusion Detection • Web security firewall implementation if possible • Future plans: • Fully integrate this model • Continue to increase web security awareness • Continue to involve in documentation projects and translations

  32. Thanks for your interest .... • Any questions? • Contact: • csirt@ulakbim.gov.tr • info@karaarslan.net • ULAK-CSIRT • http://csirt.ulakbim.gov.tr/eng

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