How Snort's Stealth TCP Port Scanning Works
Snort is an open source network intrusion detection system, capable of performing real-time traffic analysis and packet logging on IP networks. It can perform protocol analysis, content searching and matching, and can be used to detect a variety of attacks and probes. 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 ...
Security Issues with Wireless LANs
Wireless LAN (WLAN) security threats include war dialing, war driving, war chalking, WEP and WPA security cracking, and rogue access points. This artilce discuses approaches to WLAN Security. 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 ...
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 ...
Implementing a Secure Password Policy
If your network is compromised, identity thefts could use your company's customers credit card numbers and social security numbers to destroy their lives. And it's not only your company's customers who are going to suffer. When the source of the security breach is traced to your company, the result will be a negligence lawsuit. More ...
How to Become a Professional Ethical Hacker
As a Professional Ethical Hacker you need to understand the various kind of hacking, which can be classified into White Hat, Grey Hat and non-ethical hacking. Only a deep knowledge can help in combating any sort of breach or unauthorised access in the information system. More ...
What Roles Do Firewalls and Proxy Servers Play in Network Security?
A firewall can detect specific application protocol content and filter out any applications that exhibits certain characteristics. A proxy server sits between hosts and server that filters requests by checking IP Addresses, Protocol and application content. 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 ...
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 ...
Network Security
Network security starts with physical security. Network components such as servers, hubs, and routers should be located in a secure equipment room. Part of physical security is protecting your cable plant from damage and electronic eavesdropping. More ...
Firewall Rules
The purpose of a network firewall is to protect computer and IT resources from malicious sources while allowing internal network users to access the Internet. For this purpose it uses an Access Control List (ACL). More ...
What is a Botnet Attack and How to Identify It?
Attacks against networks are increasing because attackers find many networks are not properly patched and secured behind a firewall. Once attackers have compromised a machine, they simply install a bot on it to establish communication. The botnet is then controlled by the attacker. More ...
