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 ...
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 ...
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 ...
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 ...
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 ...
How a Firewall Provides Network Security
A firewall provides security by controlling access between a network and an untrusted network. A firewall can be a hardware device, software, or combination of hardware and software. More ...
How to Protect Your Business From a Cyber Attack
Hackers can be crippling for small businesses who, many times, never recover from the theft. Here are some precautions you can take to help keep your business protected against hackers. 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 ...
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 ...
Firewall Internet Security - The Basics of a Firewall
Enterprise companies today employ firewalls that inspect sessions between external and internal hosts and devices. The firewall filters traffic by examining the source and destination IP addresses, application port and protocol port before making a decision whether to permit or deny a session or specific traffic. More ...
Elementary Information Security
This book is certified to comply fully with the NSTISSI 4011 federal training standard for information security professionals. The text emphasizes both the technical and non-technical aspects of information security and uses practical examples and real-world assessment tools. 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 ...
Designing Physical Network Security
Network security covers a multitude of issues. The first issue to address is physical access to your network. More ...
