OS 390 Security 
This course describes the OS/
390 Security Server, its components (
RACF,
DCE,
Firewall Technologies, and
LDAP Server), and its role in
System/390 security. This course is designed as an introductory course for users, administrators, and managers who are new to the OS/390 Security Server or its components.
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Firewalls and VPNs 
To explain how firewalls and
VPNs facilitate network security
Network administrators, firewall administrators, systems administrators, application developers, and IT security officers
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