Unit 1 - The Threat Model and Protection Methods
* Internet threat model and the attacker´s plan
*System security and service availability
*An overview of protection mechanisms
Unit 2 - Basic Service Security
* SELinux
* Host-based access control
* Firewalls using Netfilter and iptables
* TCP wrappers
* xinetd and service limits
Unit 3 - Cryptography
* Overview of cryptographic techniques
* Management of SSL certificates
* Using GnuPG
Unit 4 - Logging and NTP
* Time synchronization with NTP
* Logging: syslog and its weaknesses
* Protecting log servers
Unit 5 - BIND and DNS Security
* BIND vulnerabilities
* DNS Security: attacks on DNS
* Access control lists
* Transaction signatures
* Restricting zone transfers and recursive queries
* DNS Topologies
* Bogus servers and blackholes
* Views
* Monitoring and logging
* Dynamic DNS security
Unit 6 - Network Authentication: RPC, NIS, and Kerberos
* Vulnerabilities
* Network-managed users and account management
* RPC and NIS security issues
* Improving NIS security
* Using Kerberos authentication
* Debugging Kerberized Services
* Kerberos Cross-Realm Trust
* Kerberos Encryption
Unit 7 - Network File System
* Overview of NFS versions 2, 3, and 4
* Security in NFS versions 2 and 3
* Improvements in security in NFS4
* Troubleshooting NFS4
* Client-side mount options
Unit 8 - OpenSSH
* Vulnerabilities
* Server configuration and the SSH protocols
* Authentication and access control
* Client-side security
* Protecting private keys
* Port-forwarding and X11-forwarding issues
Unit 9 - Electronic Mail with Sendmail
* Vulnerabilities
* Server topologies
* Email encryption
* Access control and STARTTLS
* Anti-spam mechanisms
Unit 10 - Postfix
* Vulnerabilities
* Security and Postfix design
* Configuring SASL/TLS
Unit 11 - FTP
* Vulnerabilities
* The FTP protocol and FTP servers
* Logging
* Anonymous FTP
* Access control
Unit 12 - Apache security
* Vulnerabilities
* Access control
* Authentication: files, passwords, Kerberos
* Security implications of common configuration options
* CGI security
* Server side includes
* suEXEC
Unit 13 - Intrusion Detection and Recovery
* Intrusion risks
* Security policy
* Detecting possible intrusions
* Monitoring network traffic and open ports
* Detecting modified files
* Investigating and verifying detected intrusions
* Recovering from, reporting, and documenting intrusions