Networking and Security

After asking What is network security?, you should ask, What are the threats to my network?

Many network security threats today are spread over the Internet. The most common include:

-Viruses, worms, and Trojan horses
-Spyware and adware
-Zero-day attacks, also called zero-hour attacks
-Hacker attacks
-Denial of service attacks
-Data interception and theft
-Identity theft                                  
To understand What is network security?, it helps to understand that no single solution protects you from a variety of threats. You need multiple layers of security. If one fails, others still stand.
A network security system usually consists of many components. Ideally, all components work together, which minimizes maintenance and improves security.

Network security components often include:

-Anti-virus and anti-spyware
-Firewall, to block unauthorized access to your network
-Intrusion prevention systems (IPS), to identify fast-spreading threats, such as zero-day or zero-hour attacks
-Virtual Private Networks (VPNs), to provide secure remote access......