Net+ 
The
CompTIA Network+ Certification course builds on your existing user-level knowledge and experience with personal computer operating systems and networks to present fundamental skills and concepts that you will use on the job in any type of networking career. You will identify and describe all the major networking technologies, systems, skills, and tools in use in modern
PC-based computer
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Host Security 
... course focuses on properly securing machines running the
Linux operating systems. A broad range of general security techniques such as packet filtering, password policies, and file integrity checking are covered. Special attention is given to securing commonly deployed network services. At the end of the course, students have an excellent understanding of the potential security vulnerabilities
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