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Posts Tagged ‘Networking’

In situation where I have access to one ethernet cable between two end points, is there a way to multiplex so it functions like two independent (lower bandwidth) ethernet cables? Perhaps some sort of multiplexer sitting at both end points, each with three ethernet ports, one goes to the cable, two others are the virtual cable end points.

A network switch is a broad and imprecise marketing term for a computer networking device that connects network segments.The term commonly refers to a Network bridge that processes and routes data at the Data link layer (layer 2) of the OSI model. Switches that additionally process data at the Network layer (layer 3 and above) are often referred to as Layer 3 switches or Multilayer switches.Not necessarily. You can buy physical cable splitters which enable you to run two 10/100 Mbps Ethernet links (each link only needs two pairs) on one regular four pair Ethernet cable. No switch, no power needed. Caveats: Obviously will not work for GigE, which uses all four pairs. May or may not work for 10/100 Mbps Ethernet, depending on distance, cable qualityA network switch is a broad and imprecise marketing term for a computer networking device that connects network segments.The term commonly refers to a Network bridge that processes and routes data at the Data link layer (layer 2) of the OSI model. Switches that additionally process data at the Network layer (layer 3 and above) are  Read more... (493 words, 1 image, estimated 1:58 mins reading time)

The world of social networks opens up a whole new world of communication, connection and relationship. Renewing contact with friends and business associates, and even building new ones is fast, fun and easy.

But with that great convenience , we also open up convenient ways for our security to be compromised by crooks and enemies. There are legions of stories of people having embarressing photos or private information exposed to the world without realizing it and wishing they could take it back. While that is bad enough, we also know of posted information being used to rob people when they are not home as well. This can be some dangerous territory.

There are also stories of people having their reputations attacked in the anonymous world the Internet allows where anyone can say anything about anyone and remain hidden in the background. That same anonymity also allows us to be impersonated or even have our identity stolen. Someone can copy all of our Facebook page and create one just like it by having a page with a similar name, designed to look just like ours and from which they can put damaging or even outright false information that embarresses us or damages us or both.  Read more... (1368 words, 1 image, estimated 5:28 mins reading time)

Networking security tools such as FortiGuard Web Filtering are a vital component of any modern business plan, at least for a company that relies on computer systems. These security devices and services ensure that all the vital information and data systems that keep organizations up and running are safeguarded from threats and attacks. Certain services, such as Fortinet Analysis & Management, make networking security much more convenient for modern business owners and organizational administrators. With this service, clients get a central management system without having to buy or maintain equipment, plus the benefit of skilled professionals comparing configuration policies and tracking policy changes. Analysts also provide support and reporting on security. Additional features include web browser-based user interfaces, secure data transmission and access, reliable service through hosted systems and the option to manage firmware updates in real-time or on a schedule. Protecting networks against spam, malware and other threats that appear in email messages is also crucial for modern businesses. This is why tools such as Fortinet FortiMail appliances are so useful. These security devices offer messaging security for any size and type of organization with features such as an inbound filtering engine that blocks spam and malware before it can clog the network and hinder workflow. FortiMail’s outbound inspection technology also prevents outbound spam or malware that could cause other antispam gateways on the other end to blacklist users that were unaware of threats in their outgoing emails or attachments. Organizations like schools, libraries, government agencies and enterprise businesses of all sizes often rely on services like FortiGuard Web Filtering. This service helps block access to harmful, inappropriate and dangerous websites that may contain phishing and charming attacks, malware such as spyware or questionable content. Without the right networking tools, from Fortinet Analyses & Management to Fortinet FortiMail, computer systems are always going to be at risk of attack. This is why businesses and organizations take the steps to prevent attacks before they happen.

Networking Security

Networking Security Threats

We as individuals interact with networks in our daily activities whether in the office, at home, or when we perform monetary transactions, use our mobile phones to make calls or use transport systems to get to work. Today, telecommunication and utility companies use networks to track phone, electricity or water usage and bill for it. Government agencies and organisations depend heavily on networks to communicate with their customers in areas such as credit or debit card transactions and billings. Many of our basic ways of life would be less convenient and many activities would be unfeasible without networks. Not astonishingly, network systems are criminals and intruders targets of choice, because of their potential vulnerabilities.

What makes a network vulnerable?

Connecting computer systems together is incredibly risky due to potential system misconfiguration, poor security policies and software flaws. Criminals can gain unauthorised access to remote networks. Intruders can capture transmissions between network nodes. Furthermore, linking networks enables organisations and individuals, including criminals, to communicate in ways that were not feasible before, resulting in a new set of vulnerabilities. Misuse of newly discovered vulnerabilities by intruders often catches us unaware. There is a need to keep information systems and the networks which carry the associated information or data secure.  There are many names for these, from networking security to information assurance.  The overriding set of principles are those of C I A (Confidentiality, Integrity, Availability), which are considered by many to be the tenets or principles of computer security. Digital assets include the entire network infrastructure, system application programs including data.  Read more... (282 words, 1 image, estimated 1:08 mins reading time)

Product Description
This book constitutes the refereed proceedings of the Second Asian Conference on Computing Science, ASIAN’96, held in Singapore in December 1996. The volume presents 31 revised full papers selected from a total of 169 submissions; also included are three invited papers and 14 posters. The papers are organized in topical sections on algorithms, constraints and logic programming, distributed systems, formal systems, networking and security, programming and systems, an… More >>

Concurrency and Parallelism, Programming, Networking, and Security: Second Asian Computing Science Conference, ASIAN ’96, Singapore, December 2 – 5, 1996, …