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Computer Network Security

NMAP (Network Mapper) Port Scanner
When hackers attempt to gain unauthorized access to a computer on the Internet the first things they do is look for open ports. NMAP is a free and open source port scanner that hackers can use to automate the process of finding open ports to attack. More ...

How to Secure Your Wireless Network
If you use a wireless network, chances are good it is not secure. If you don't make some important configuration changes on your wireless router after installing it, your wireless network is wide open to hackers, curious neighbors and people who would rather use your broadband internet service instead of buying their own. More ...

Multi-Layered Approach to Cyber Security
A multi-layered approach can be tailored to different levels of security. Not every asset needs to be completely secure; instead, only the most business critical assets, such as proprietary and confidential information, need be protected by the most restricted settings. More ...

What is a SQL Injection Attack?
SQL injection can be used by an attacker to inject code into a website in order to access and manipulate the database behind the site. More ...

What is Penetration Testing?
This book serves as an introduction to the steps required to complete a penetration test or perform an ethical hack. You learn how to properly utilize and interpret the results of modern day hacking tools; which are required to complete a penetration test. More ...

Firewall Perimeter Network (DMZ)
A DMZ (Demilitarized Zone) or Perimeter Network is the area between the firewall that protects the network from untrusted external networks (the Internet) and the firewall that protects the internal network. More ...

Handling Rogue Access Points
A Rogue access point is any wireless access points that exist on your network without the consent of the business. If an insider were to use a laptop to act as an access point, regardless of the intent, it poses a security risk. More ...

Design a Network Security Policy
A security policy is a statement of what your systems' users are and are not allowed to do. Make sure that the policy is consistent and clearly-written. More ...

Man in the Middle Attack
In a Man in the Middle (MIM) attack the hacker places eavesdropping equipment between the sending device and the receiving device. He intercepts the data, records it and possibly modifies it, then sends it on to the intended receiving device. More ...

Network Security Model - Defining an Enterprise Security Strategy
These are the five primary security groups that should be considered with any enterprise security model. These include security policy, perimeter, network, transaction and monitoring security. These are all part of any effective company security strategy. More ...

Secure, Network Compliant BYOD (Bring Your Own Device) Solutions
A recent IBM study and revealed that 81% of organizations reported their employees are using their personal mobile devices to connect to "company resources". But BYOD (Bring Your Own Device) doesn't necessarily equate to network security problems. More ...

Network Security by Filtering
Filtering allows network administrators to control which packets are permitted or denied in or out of a network. It can be used to control how much bandwidth can be used by parts of a network, but is more often used to provide security for a network. More ...

How to Stop Hackers from Invading Your Network
Large corporations, banks, financial institutions, security establishments are particularly favorite targets for hackers. However, this menace can be prevented to a great extent if proper security measures are taken. More ...


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