The Cryptography, Access Control, Services and Network Security (LPIC-3 303) is an intensive, lab-oriented training course for administrators and specialists who work with Linux and its applications. Its aim is to deepen their knowledge about the necessary and the most important aspects of Linux security.
The LPIC-3 303 course covers: cryptography (Open SSL, GPG, data encryption), access control (e.g. PAM, ACL and EA, SELinux), application security (e.g. Apache/HTTP/HTTPS, Postfix, FTP, SSH) and network security (e.g. snort, nmap, wireshark, tcpdump, nagios).