Network Security
There’re three types or layers of security in information technology: network security, application security and physical security. Network security refers to the technology and procedures that prevents the unauthorized access of network resources. Application security refers to the security design in applications that safe-guard the protected data resources based on the level of privileges. Physical security is the administrative procedures to protect the physical setting where data centers are located.
When it comes to the IT security in reality, most people think about just network security. Of course, network security involves more technology and requires experience and expertise. CompTIA Security+ Certification is the recognized security certification in IT industry. To gain a security+ certification, it requires 2 year plus network security experience. To pass the certification test, most security professionals take security+ training. Just like other IT certification training, you could either use security+ training CD or security+ CBT. Setting up VPN (virtual Private Network) and firewall configuration are usually part of the certification tests. Systematical training supplements hands-on experience. Your experience may not touch all technical topics that CompTIA security+ training may cover.