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Computer Network Security

Cyber Security Tips for Small and Medium Business (SMB)
When it comes to small or medium enterprise the impact of security threat is even more severe. Cyber criminals love to target small business largely due to the fact that SMBs cannot afford to implement strong security protocols. More ...

Wireless Network Security
Before the IEEE completed the 802.11i standard the Wi-Fi Alliance released WPA. After the release of the IEEE 802.11i standard, the Wi-Fi Alliance released WPA2 which is compatible with both the 802.11i standard and WPA. More ...

What's the Difference Between Sniffing, Snooping, and Spoofing?
Network sniffing and snooping involve tapping into network traffic for the purpose extracting usernames, passwords, account numbers, and other information. Spoofing is when a hacker creates an email or a website that appears to genuine but is designed for the purpose extracting usernames, passwords, account numbers. More ...

Email Security
Email has emerged as one of the most important communication mediums. Failing to secure your organization's mail servers may allow spammers to misuse your servers and bandwidth as an open relay to propagate their spam. More ...

Network User Authentication
Some switches require users to authenticate themselves before gaining access to the rest of the network. Network Access Control (NAC) checks the characteristics of the device seeking admission to the 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 ...

What is Cross Site Scripting?
Cross-site scripting attacks are used to steal information from your browser when you visit websites such as ecommerce stores, forums, and even your email accounts. More ...

Prevent Hacking with Password-Cracking Countermeasures
Taking some general countermeasures can prevent hacking of your important passwords. Many people use the same passwords on every system they use. For this reason, you might instructg users to create different passwords especially on the systems that protect information that's more sensitive. More ...

Domain Name System (DNS) Vulnerabilities
The original design of the DNS did not include robust security features. DNS vulnerabilities open networks to various types of attacks, cache poisoning and DDoS attacks being the most common. More ...

Difference Between Rule and Role Based Access Control
Access control is the method used to block or allow access to a network or network resources. Two types of access control are rule-based and role-based. The difference between rule-based and role-based access control is explained here. More ...

Avoid Hacks by Rogue Wireless Devices
Watch out for hacking from unauthorized routers and wireless clients that are attached to your network. By using NetStumbler or your client manager software, you can test for access points (APs) and ad-hoc devices that don't belong on your network. More ...

Remote Access Authentication Protocols
A remote access authentication protocol is the method by which remote users will be authenticated when they log on the network. Some options are EAP, CHAP, and PAP, explined here. More ...

Understanding the Dangers Your Systems Face
It's one thing to know generally that your systems are under fire from hackers around the world and malicious users around the office; it's another to understand specific attacks against your systems. This section discusses some well-known attacks but is by no means a comprehensive listing. More ...


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