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Chapter 10. Assessing Email Services

Email services can relay information across the Internet and private networks. Due to the nature of these services, channels between the Internet and corporate network space are opened, which determined attackers can abuse to compromise internal networks. This chapter defines a strategy for assessing email services, through accurate service identification, enumeration of enabled options, and testing for known issues.



    		Network Security Assessment
    		Foreword
    		Preface
    		Chapter 1. Network Security Assessment
    		Chapter 2. The Tools Required
    		Chapter 3. Internet Host and Network Enumeration
    		Chapter 4. IP Network Scanning
    		Chapter 5. Assessing Remote Information Services
    		Chapter 6. Assessing Web Services
    		Chapter 7. Assessing Remote Maintenance Services
    		Chapter 8. Assessing FTP and Database Services
    		Chapter 9. Assessing Windows Networking Services
    		Chapter 10. Assessing Email Services
    		10.1 Email Service Protocols
    		10.2 SMTP
    		10.3 POP-2 and POP-3
    		10.4 IMAP
    		10.5 Email Services Countermeasures
    		Chapter 11. Assessing IP VPN Services
    		Chapter 12. Assessing Unix RPC Services
    		Chapter 13. Application-Level Risks
    		Chapter 14. Example Assessment Methodology
    		Appendix A. TCP, UDP Ports, and ICMP Message Types
    		Appendix B. Sources of Vulnerability Information
    		Colophon