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Monopoly power. Despite the potential for new start-ups, many aspects of the digital economy have become dominated by firms with monopoly power. For example, Amazon has cornered the market for online sales, meaning many firms have to go through the Amazon market place to reach consumers who go to Amazon out of habit. Similarly, Google and Facebook have all developed very strong brand loyalty and market share in their respective markets. This has made a few tech giants very profitable. WIth monopoly power, Google are able to charge high prices for online advertising and Amazon have the market power to undercut traditional booksellers.

Less community. A traditional bookshop can act as a focal point for local community. It may hold events, book signings and individuals may enjoy the experience of browsing physical books. With the digital alternative undercutting traditional firms, old fashioned bookshops are forced out of business. Although books may be cheaper, we have lost physical interaction between sellers and buyers which was an important aspect of the buying experience.

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Addictive nature of technology. Whilst, in theory, the internet can save time, e.g. finding bus times is much easier with internet than paper copies, this time saved may be outweighed by the time we waste checking Facebook, twitter, internet searches. Also, the sheer volume of information can cause us to drown in information and lose sight of what we actually need. More choices do not necessarily lead to better outcomes. When faced with a bewildering range of outcomes, we can take time to decide and it becomes easier to procrastinate.
aprabha2611 24 june 2020, 12:15

The promise of unrivalled wireless speed and consistency comes with a requirement for some changes in the way networks operate.

Providers will need to harness Software-defined Networks (SDN) to handle 5G’s throughput capabilities and scalability. With SDN, new functionality can be built and added on a software-based timeline, rather than the traditional (and slower) hardware timeline, ensuring networks are more agile and more efficient.

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This is particularly relevant to IoT where more than 50 billion devices are predicted to be online by 2020 – SDN is the only viable way to ensure networks can secure and manage this additional traffic. Many forward-thinking organisations have already been extensively testing and deploying SDN as a means to lower costs and increase bandwidth across their corporate networks.

The other big thing about 5G in relation to Industry 4.0 is how 5G improves network latency, according to Anurag Lal, CEO of Infinite Convergence Solutions, “this provides the ability for applications, devices and entities to communicate in near real time, if not absolute real-time,” he said.
Tags: 5G, SDN
aprabha2611 17 june 2020, 8:42

Most LAN networks use the “Class C” private IP address range. So in a typical network in a home or business the local IP addresses will start with 192.168. In a Class C network the first three groups of the IPV4 address must match exactly for the devices to be able to communicate. So it is common for local network devices to have an addressing scheme such as 192.168.1.1-254, with the first three octets matching and the last providing a unique address for each device.

What defines the different classes of IP addresses is the “subnet mask” which is associated with that class. Normally the subnet mask is the same in every device on a single LAN. If we look at the Class B private addresses above, we see that the default subnet mask is 255.255.0.0. The first two octets of this subnet mask with the “255s” indicate that those sections of the IPV4 address must match on all devices that need to communicate with each other. So in a Class C network the default subnet mask says that the first three octets must match exactly.

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Public IP addresses will be issued by an Internet Service Provider and will have number ranges from 1 to 191 in the first octet, with the exception of the private address ranges that start at 10.0.0 for Class A private networks and 172.16.0 for the Class B private addresses.

It’s important for technicians to understand that IT personnel can choose to use any of the private address ranges for their LAN devices. It is not at all uncommon for a technician to be confronted with a client’s network where the local addresses are in the range of 10.0.0.1-254, and the subnet mask used is 255.255.255.0. This is an example of using Class A private addresses with a Class C subnet, which makes this a Class C network. It is the subnet mask that defines which “class” a LAN network’s addressing is using.
Tags: IP, IPV4
aprabha2611 5 june 2020, 5:18

The design goals were simple: the new DHCP software should be easy to use, not be restricted by licensing, and help popularize IPv6. That’s how the Dibbler project came to be.

One of the core assumptions was to support IPv6 only. The reason was obvious — speed up the transition to IPv6, while making sure there were no strings attached. And it really worked! The software doesn’t have any ability to do anything with IPv4. It was a bit naive and idealistic, but it was a student project, so there was nobody to do a reality check for me….

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Somewhere around 2006, an email came that invited me to what became the first of a series of DHCPv6 ‘bake-off’ meetings. The idea was to bring in DHCPv6 developers from different companies to meet in one place, do interoperability tests, and discuss the issues discovered. I was flabbergasted and terrified at the same time.

Back then, I was a recent university graduate and some guy from the US invited me to fly to Amsterdam to test my software. The other engineers participating were coming from organizations such as Cisco, Microsoft, Sun, and ISC. Suddenly, the whole experiment became much more serious. I still remember the angst and doubts — how could an essentially overgrown student project possibly keep pace with giants like Cisco or Microsoft?
Tags: DHCP, DHCPv6
aprabha2611 1 june 2020, 7:53

With the rise of coronavirus (COVID-19), businesses around the world are facing major disruptions. They are struggling to continue business operations and secure their corporate assets. At the same time, employees are combating a tough fight against the virus itself. To make things worse, cybercriminals are riding on this opportunity, trying to make the most of the situation. A couple of weeks ago, Proofpoint researchers discovered coronavirus-themed attacks. Apart from the increase in malicious messages, experts observed a form of attack budding on the fear of purported unreleased cures for coronavirus.

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Amid the spread of this global pandemic, employers are tossing between allowing their employees to work from home or continue to operate from the established offices. Regardless, organizations need to consider the risks associated with their data security and data privacy in the wake of potential impact.

As coronavirus is not only affecting one’s health but also the continuous growth of businesses, it is time for them to expand their IT disaster recovery and contingency plans to address unforeseen scenarios. Enterprises need a plan that covers all possible types of fabricated attacks during the rapid emerging outbreak of COVID-19.
aprabha2611 28 may 2020, 16:15

Cellular networks are increasingly used for more than voice calls. Improved handsets and the networks' increased data transfer speeds have resulted in the development of a range of sophisticated mobile phones or 'smartphones' and handheld PCs, tablets and other mobile devices.

Cellular network technologies
Technologies connected with cellular phone services include:

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4G - fourth-generation data transmission services deliver high data rates equivalent to fast broadband networks
3G - third-generation data transmission services deliver fast data rates equivalent to standard broadband networks
global positioning system (GPS) - allows the position of a device to be precisely located
short messaging service (SMS) - text messaging
multimedia messaging services (MMS) - allows the sending and receiving of other communications such as images, audio and video
global system for mobile communication (GSM)/general packet radio service (GPRS) - data transmission services carried over cellular networks
The newest, fifth-generation of mobile internet connectivity – or 5G – is still in its infancy. It relies on new radio technology that runs on higher frequencies, and promises much faster data download and upload speeds, wider coverage and more stable connections. For now, however, its primary role is to boost the capacity of the existing 4G networks rather than replace them.

What can cellular networks do?
Cellular technologies offer additional ways for networking of mobile devices. The worldwide coverage of cellular networks means that such facilities are often available in places where other types of networking, such as local area networks (LANs) and wireless LANs, cannot reach. As a result, you can use these technologies alongside WLANs as a means of 'roaming' - maintaining contact while travelling.
aprabha2611 27 may 2020, 5:59

The SDWAN or software defined wide-area -network is a specialized application of SDN technology applied to wide area network (WAN) connections like 4G, broadband Internet, MPLS or LTE. SDWAN solution helps to meet an organizations objective of security, WAN performance and cost-reduction.

Further, SD-WAN decouples the network from the management plane and abstracts management and monitoring functions from hardware. Other key benefits which SD-Wan solution render are centralized management (including configuration) of WAN and time saving features like Zero touch provisioning.

If you are seeking a quality input over some of the best SDWAN vendors in the market then you are certainly at the right place. Here, on the basis of network performance, security, ease of application and long term affordability, we have ranked top 8 SDWAN vendors in market for enterprise networks.

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Products for WANs (Wide Area Networks) are developed by this company including Software-Defined WAN (SD-WAN) and WAN optimization. The company delivers true transformational cloud promise with its unique model of business-first networking. Starting its journey from a WAN Optimization company, Silver peak has taken great leaps in transforming to SDWAN leader (Gartner leaders Quadrant in year 2018 and 2019) and has been giving very tough competition to VMware and Cisco.
aprabha2611 22 may 2020, 6:18

The most common SD-WAN deployment model includes vendor-branded hardware known as SD-WAN edges, but there are also virtual options for the cloud. The edge replaces service provider handoffs – Ethernet, LTE, T1 – and offers routing or switching access to the branch infrastructure.

Network Function Virtualization (NFV) is another deployment model, where virtualization and white box compute platforms are combined. Regardless of deployment model, a physical networking element is required to connect back to the SD-WAN edge. The SD-WAN device must also provide the functionality needed to incorporate the branch into the WAN and the rest of the network.

What are the benefits of SD-WAN?
Organizations are now requiring a higher level of agility than what traditional WAN designs offer. With SD-WAN technology, businesses can instantly realize benefits such as secure connectivity and endpoint management, transport and hardware independence, bandwidth efficiency, improved application performance and simplified IT operations.
aprabha2611 20 may 2020, 14:18

An SD-WAN offers a much more agile and affordable platform compared with traditional branch office network connectivity, as it avoids organisations having to make relatively costly capital expenditure (capex)-intensive purchases. All costs are now transformed to operational expenditure (opex).

With the addition of aggregation technologies, centralised management and application-aware routing, SD-WAN delivers flexible and scalable connectivity that can be significantly cheaper than a traditional WAN architecture. But there is much more to SD-WAN than just cheaper branch office connectivity, so IT buyers have a lot more to consider.

For instance, Brad Casemore, vice-president of research, datacentre networks at IDC, says: “As the digital transformation initiatives and cloud strategies of large enterprises mature and become increasingly sophisticated, SD-WAN offerings must be capable not only of scaling to accommodate large numbers of sites, but also of providing multi-tenant and segmentation capabilities that the world’s largest enterprise customers demand for control, manageability and consistent security across multi-cloud environments.”

In December 2019, a study from Cato Networks found that failing to fully consider digital transformation requirements can undermine firms’ long-term SD-WAN satisfaction. The fourth annual state of the WAN report, Networking in 2020: Understanding digital transformation’s impact on IT confidence in enterprise networks, said nearly three-quarters of respondents expressed significantly less confidence in their networks after digital transformation.
Tags: SD-WAN
aprabha2611 18 may 2020, 10:18

If your company does sign up for enterprise support, it makes sense to make good use of the financial investment. However, I have seen a number of ways that companies engage with Enterprise Support that result in poor outcomes.

DON’T believe that Enterprise Support replaces staff training. You may well find yourself asking AWS Support relatively basic questions. This isn’t a bad thing; that’s what they’re there for. That said, if your primary mode of engagement with Enterprise Support is to ask basic “How do I use this service” questions, your money may be better spent on hiring internal staff who are already up to speed on AWS concepts. Despite their best efforts, AWS cannot take ownership of your applications the way that internal staff can – and should.

DON’T treat the Enterprise Support staff as though they’re the enemy. Because they’re not. I have seen people draw sharp lines between “us” and “them.” These start at the level of communications failures, and continue into the realm of failures of empathy.

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Yes, I understand that you want to keep company information proprietary. You’re loathe to explain that the technical problem you’re trying to solve is to sort Twitter for Pets’s dog-tweets by breed at scale. But you have to find an acceptable way to share what you are trying to do, or the professionals are limited in their ability to help you. If you refuse to tell your account team what you’re working on, you cannot reasonably be upset if it turns out that AWS releases a service that solves your exact problem.

AWS builds a great number of services that solve common problems. I constantly marvel at how often I see an architectural problem in one client’s environment that mirrors what’s going on in another client’s environment. If you’re trying to move data from one place to another, or working around a frustrating limitation in AWS’s offering (or your perception of such a limitation), start by talking with your account team. Very often the answer takes the form of, “Wait a few weeks and this will go away.”
aprabha2611 11 may 2020, 9:32
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