Cryptography. Certificates and keys. SSL / TSL client and server. GPG encryption. Management of public and private keys. GPG key and configuration servers. Encrypted file system. LUKS. CBC, ESSIV, LRW, XTS modes. Access control. PAM. Password cracking, nsswitch. ACLs. EAs. SELinux configuration. TE, RBAC, MAC, DAC. SMACK. AppArmor. BIND/DNS security. Security in email services. Apache / HTTP / HTTPS security. FTP security. OpenSSH. NFSv4. Syslog. Security operations. Host configuration management. Network security. Intrusion detection. Monitoring. iptables configuration. OpenVPN configuration.
