Basic Networking

Process of prevent and monitor unauthorized access, misuse, modification, or denial of a computer network and network-accessible resources. Involves the authorization of access to data in a network controlled by network administrator.

Security Management

For different kind of situation on home or office may require high-maintenance and advanced software and hardware to prevent malicious attacks from hacking and spamming.

Types of Attack :
Passive
Network - wiretapping, port scanner, idle scan, encryption and etc.

Active

Virus

Data modification - Denial-of-service attack, DNS spoofing, ARP poisoning SQL injection, phishing, sniffing and etc.

https://en.wikipedia.org/wiki/Network_security