The cloud is all the hype now, but most people don’t keep in mind that it is not a silver bullet or a panacea.
Whether we realize it or not, we are already users of cloud services, every time we sign into Gmail, Picassa, Facebook, Linkedin, Office365 or DropBox. The providers of such services afford to invest much more knowledge, effort into operating a reliable infrastructure – because of their scale.
No physical ownership of the data. From an operating perspective this is rarely a problem, but this is worth considering from a legal and business continuity perspective. Potentially slower access to the data, especially for large files (studio size images, videos), as the Internet is still considerably slower than a local network. To facilitate the transition from an on-site service to a cloud service, it is always a good idea to do a pilot program with a small team or for a smaller project, so as to have the change to smooth out any bumps in the road with minimal business impact. It just might be the case that an US-based company has a lot of users from Europe or from Asia. Closer means faster: on average, the edge will be geographically closer to the end-user, which means that the round-trip of the data packets will be faster, which means your site will load faster. Many is better: most CDNs will allow different requests (files) belonging to the same page from different domains, which means that end-users browser will be able to request more stuff at the same time, which is yet another source of speed up. It is important to understand that your web servers do not need to be virtualized or cloud-hosted in order for you to take advantage of the advantages of CDN.
The key take-away from this post is that cloud services provide a vast array of tools to help in today’s business and technology environment, without however being a one-size-fits-all solution. Practice for certification success with the Skillset library of over 100,000 practice test questions.
As you already know, understanding access lists will help you not only to pass Cisco exams but also in your real life job. Cisco routers can be configured to utilize a variety of access lists like the most basic being the standard ACL, or access list. Access lists are written and read line-by-line, each line in the access list is a statement or rule for the router. A Standard ACL is applied inbound or outbound on the router interface that is closest to the destination of the traffic.
An Extended ACL is applied inbound or outbound on the router interface that is closest to the source of the traffic.
I hope this tutorial will help you have a better understanding of Access Lists and prepare you for the exams.
Afazuddin Ahamed a Network Engineer who is always engaging in learning and sharing with others. Ethernet or GPON: Which technology is best suited for Information Transportation Systems (ITS) of the 21st Century? For example if you want to apply an standard ACL you should apply it near to the destination, in that case you apply it in the Houston Router near to the hosts that you want to deny.
The same thing happen with the extended acl, it should be applied near to the source adn you are applying it far to the source. Intense School has been providing accelerated IT training and certification for over 12 years to more than 45,000 IT and Information Security professionals worldwide. Stay up to date with InfoSec Institute and Intense School by connecting with us on Social Media! InfoSec institute respects your privacy and will never use your personal information for anything other than to notify you of your requested course pricing.
The world of information and data continues to grow and as it does, the cloud is there beside it. We all know, that time when software is due for an update, it can be a daunting task for any size business. However, because cloud providers such as ourselves look after every aspect of cloud computing, no business, including the corporate ones have to worry about making sure they keep track of the updates and when they are due.
Cloud providers such as ourselves take care of everything, all of the maintenance and the system updates, so it means the corporate players can cut their IT budgets in half, at least.
The cloud is an everywhere platform, it gives any business, unparalleled mobility particularly in the corporate world. Another bonus is the cloud helps keep the corporate world on the same page, all the time – how? Keeping your data off-site is the thing most businesses shy away from the cloud is mentioned, however the cloud is one of the most secure forms of data storage available. We understand that the cloud is easily accessible, however providers take extra measures to protect stored data by only granting access to users, how?
Also, providers also use the most up-to-date security monitoring software to ensure security breaches don’t happen. When it comes to the cloud and cloud computing in the corporate world, it plays a giant role. Have you integrated the cloud into your company’s plans?
Data Back Up.  Two of the most important words in business, not only from your point of view, but from your clients. Is my data backed up?  How is my data being backed up?  How often is it being backed up?  Are some of the questions you should have, or should be asking yourself?  Picture the scenario, you’re computer has crashed – Would you be able to access the notes you need for the client meeting in an hour, how about all the material you’d prepared for that meeting?  Your business is running on data that you’ve stored on your computer, but what are you doing to protect? You’re not the only one who may not be protecting their informational assets as they should.
It could only be a matter of time before your business has a disastrous data loss incident and if you’re one of the 92%, what effect could that have on your business? Cloud backup is one of the services through which cloud computing resources and infrastructure is used to create, edit, manage and restore data, services or application backup. Well, Cloud backup works when a cloud backup provider (Cloud Shepherd) assigns cloud storage that is available globally over the Internet. Cloud backup is a managed service where the entire infrastructure and supporting services are managed completely by the vendor – in this case, Cloud Shepherd.  Besides only being data backup, cloud backup is actually combined with disaster recovery solutions. For starters, your data is stored off site and is copied to servers in different locations, so if one goes down; your data can be retrieved from elsewhere on the backup network. Your data is in safe hands.  Your data is encrypted by the backup service’s software program on your computer before it is sent to the cloud, so “cyber thieves” on the Internet can’t intercept it. Before your data is sent the Cloud, the backup service software detects any virus or infection. Hopefully Cloud backup is sounding clearer and the above information has helped you understand more about the Service. With so much pressure it seems to move to the Cloud, SME’s have got a challenging decision ahead of them. Do they stick with what they know best, the CAPEX, budget swallowing old ways, or reach out of their comfort zone and try an OPEX pay as you go way of IT? With so many cloud companies offering solutions, it’s no wonder SME’s get confused with what’s on offer.


Most SME’s think about moving to the Cloud because of rapid growth, wanting to streamline processes, especially when you have multiple sites in the business and making IT useable for the future. With the news rife about cyber security, threats and hacking of large businesses, security is probably the most important concern for any business owner and worry that stops SME’s moving to the Cloud. As the business expands, your IT requirements will change to accommodate your business needs. Whether your business is in a low season for sales or the office is flying high as a kite from taking on sales, as a business owner you need to make sure resource is in place to accommodate all situations.
With the old ways of working, maintenance of the traditional software, is costly and requires a huge amount of support from your IT provider. If you are looking to make IT more accessible to your employees, looking to save money and make a change for the future to be more environmentally friendly, looking to take away the pain of IT and the upfront costs it brings, then Cloud Computing is something you need to explore. As the cloud makes its stance well known in the world of technology, still it brings fears of fluffy nonsense, expectations of hard hitting tech and benefits that seem too good to be true.  We asked ourselves what are those benefits to business owners thinking of bringing the Cloud into their business and what differences will they see. Historically, capital expenditure investment in equipment has made computer power, storage and scalability very hard to manage. Deployment of a managed desktop delivers exactly what is necessary to provide all users with sufficient compute power – paid for per user, per month.
The key to the growth of most organisations is cost efficient agility, allowing them to compete in any market, at any pace. With us, there are no refresh points and no technology expiry.  The end user access equipment becomes simplistic, and easy to manage. And lastly, if the above reasons were not enough, the Cloud is fully managed – that’s right no more headaches! Hopefully, we’ve helped put your mind at rest and reassured you that there are benefits for business, employees and you, the business owner.  Embrace the Cloud and in return, the benefits will come floating through.
The Cloud has become an IT buzz-word that many companies are either implementing into their everyday working life or disregarding it, because they don’t understand what it means for their business.
It’s a technology that allows us to work in the same place, on any device, in any location and in a highly secure environment. Over the next 5 years, the need for a local IT department will be dramatically reduced.  The days of capex expenditure is gone, no more worrying about where the money will come from to buy that expensive server and of course the, ever-increasing energy bills will become something from the past. Firstly, the Cloud is opex expenditure, it is a pay as you technology which means you can budget your IT costs into a monthly manageable, predictable, scalable sum.  It’s no wonder for those reasons, it has attracted so much attention from the Technology world. We understand it’s a lot to take in and it’s different, not many like change.  However, this change is for the good and will allow our businesses to develop, keep up with technology at an affordable pace.
Like Bob Dylan said in 1963, "The Times They Are a-Changin'."  Well, maybe they're not changing too much. Now let's fast forward to the age of the cloud, and we're presented with a different, yet familiar scenario.
So when it comes to Dylan's "The Times They Are a-Changin’" saying, applying it to our reliance on software applications, we see that we still depend on the stuff that runs on our computers, but in a cloud world, it's not just one computer that's affected, it's many. Don't miss each week's most important technology trends, insights and decision-making advice, right in your inbox.
The cloud (or more technically speaking), the use of large scale virtualization is recommended for specific use cases. In other words, if developing service X (let’s say email) would cost $10 million, it would not make sense for a company with 20 employees, but it would make sense for a service provider which has 100,000 such companies as its customers. Although this risk can be partially mitigated by having local snapshots of the data, it is worth considering.
If every three months, you need to crunch 100TB of data in one big scoop (in 12-48 hour), there’s no reason for you to keep and pay for the required infrastructure for the entire three months. Given the fact that the cloud encourages the use of several (often smaller)virtual machines as opposed to a few ones, it quickly becomes unpractical for operations team to manually configure each machine.
Although cloud providers offers a great array of tools for managing security (firewall, dynamic keys), most system administrators may not be familiarized with these tools and best practices. That isn’t to say you cannot get the same performance from a cloud machine that you can get from a physical machine (dedicated, bare-metal hosting). Either starting up on or transitioning to the cloud requires careful planning and an in-depth understanding of the processes to be implemented as well as of the technology landscape. Any host connected to Chicago Router should not telnet (but must ping to each other) to Houston Router but can telnet Hosts connected to New York.
Again, I will suggest you to do some practise, either in packet tracer or in real Cisco device.
He is CCNA, CCNA-Voice, CCVP certified and currently working towards certification in Wireless & Datacenter.
We’re not saying to you that Cloud Computing services don’t cost money, they do – but it’s a fraction.
Well businesses had to waste time, as well as money upgrading servers and expanding their storage needs. Whether that means employees want to work from home or share files with colleagues around the world. Files, data, and documents are kept in a central storage location, so can be accessed at any time, anywhere, again on any device. Information is is stored in the cloud and not the actual device itself and because of this business data is always secure and accessible, even in the event of theft. If you’d like to know more, why not reach out to us on 0800 368 7373, where we can organise a catch up and grab a coffee.
Should they embrace the new ways of doing things, or stick with the analogy ‘you can’t teach old dogs new tricks’.
With Cloud Computing, your business has the power to stay flexible as you do not have to invest in new servers or equipment or supply additional IT training. By adopting the software into your business, you are providing it with a way to add new software tools, saving you money.
With Cloud Computing, this is no longer an issue, the Cloud provider will take care of the software upkeep. The disparate resource of PC hard drives, RAM and processor power have meant that many organisations have had far more resources than they could effectively use, and manage. This shift to operational expenditure based costing for IT allows for instant elasticity, long term scalability and easy fixed cost growth for the business.
The implementation of thin client devices, and mobile devices, can allow businesses to foster a “bring your own device” (BYOD) strategy. Future proofing the technology infrastructure within the business with a virtual desktop allows the business to deploy exactly what is necessary, when its necessary, where its necessary – to instantly accommodate any change within the business.
The managed desktop, and in particular when delivered over a fully managed network, allows for a very clear handover point ensuring skill sets employed by the business are deliberate and in line with user engagement, productivity and growth strategies rather than break fix and IT estate management. Many end users have sat in shock, followed by disdain, as they realized that their unsaved documents were lost and replaced by that hideous screen of blue.


As more companies move their applications to off-premises cloud providers, the reliance on connectivity and cloud provider uptime grows. What started as Lync problems led to a nine hour outage affecting a significant number of email users. If there's no connectivity between the home office and the cloud data center, end users will still just sit there shuffling through papers, looking for something to keep them busy. In this article, we’re going to go through these use cases for which the cloud is recommended. The non-cloud solutions would entail either over-scaling your infrastructure just to cope with those 5-10 days of traffic spikes or settling for unsatisfactory performance during the most profitable time of the year.
This use case is common in research, where workloads are not periodic and tend to be intensive. A CDN customarily delivers to end-users the static assets from your site (stuff that rarely changes and that is the same regardless of the user): images, CSS files, JS files, videos.
By default, if they are not configured to use persistent storage (such as Amazon’s Elastic Block Storage or Simple Storage Service), the data on them disappears with them. Make sure your team(s) has a good understanding before moving business-critical data and apps in the cloud. The basic access lists in the Cisco CCNA curriculum are the standard access list, the extended access list and the named access list.
This can cause a problem because many people assume that, by default, an access list is permissive, and that you only have to write statements that deny the traffic you want to filter, and that everything else will be permitted, but this is not true.
If you have any questions regarding this or have any suggestions to improve your preparation for Cisco exams, then please let me know. He holds Bachelor of engineering degree in Information Communication Engineering from Bengal Engineering and Science University, Shibur (IIEST, Kolkata). The cloud is extremely scalable, which is essential for the changing data storage needs of the corporate world.
By storing data safely on secure servers in secure locations instead of in your server room. Choosing the right IT requirements for your business that grow with your company strategy and growth is important. By implementing the Cloud into your business you’ve saved money, seen cost savings and seen your IT change so it’s predictable. You’re also able to increase your storage capacity, without having to spend thousands on hardware and servers. With all eyes on the cloud, watching for its success or failure, the impact of the outage was big enough to draw the attention of the entire IT industry. Recently, Internet providers got a wakeup call when Time Warner Cable had an outage that affected over 11 million customers [Read: Time Warner Outage Prompts Investigation on Reliability]. In the final chapter, I am going to emphasize some of the caveats, traps and risks associated with transitioning to the cloud.
A cloud solution would allow you to grow or shrink your infrastructure  depending on these need with one-hour step. The CDN is basically a network of severs (called nodes or edges) around the world which copies the static content from your website (even if your website is NOT cloud-supported) and then serve this static content several times to different users in its geographic vicinity. This is far better than what you could possibly achieve on-site, so it makes cloud services an ideal candidate for backing up your data.
Nevertheless, one should always keep a close eye on cost, as the freedom of expanding and shrinking afforded by cloud providers comes with a price. Access lists are statements that a router will use to check traffic against, and if there is a match, the router can filter that traffic by either permitting or denying the packets based on the access list statement. The named access list is given a name instead of a number and is configured to be either a standard or extended access list. Your valuable feedback always encourages me to provide you a better solution than the previous one. He also holds Master’s certification in Electronics Engineering from Queens University Belfast, United Kingdom. With severs not being kept on your site, you are also minimising electricity bills, the chance of any electrical faults.
Implementing Cloud Computing in the business is simple, predictable and flexible as it takes care of everything for you. The downtime was so bad, that the state of New York is investigating the event, especially since so many city services rely on some level of Internet connectivity.
Also, consider that considerable reductions in cost can be achieved by using reservation plans with cloud providers: making a commitment for a certain usage over 1-3 years in exchange for a reduction is cost. Be sure to benchmark performance on several instance types and make at least a high-level cost projection. When you decrease the number of computer systems you don’t use and reduce the size of your server room, in some cases eradicating the need for one at all, this dramatically cut your electricity consumption. Simple math would dictate you would need somewhere between 40-60 web servers and 40-60 application servers to handle the peak load (the exact number would depend on application type, your business process, average machine load during “normal traffic). One mitigation for such risk is to encrypt data with a private key before transmitting it to the cloud service. During his spare time, he loves to read about technology trends for various industry verticals.
If you were to take this infrastructure on-site, it means that 90% of your cost would be waste during the 355 days of the year when you don’t need the extra-juice. However, this raises the issue of securely and reliably storing the keys (in at least two geographic locations, in order to achieve disaster recovery capability).
What a cloud provider does is it allows you to only activate and pay for this extra-infrastructure when you need it. In the case were spikes are expected to have a yearly seasonality, it is reasonable to rely on cloud services only during that time of the year. However, in case of disaster, retrieving the data from cloud storage and resuming operations can take days or even weeks, which may prove unacceptable for business continuity. An use case more suitable for more mature companies is to have an up-to-date replicate of their entire infrastructure ready for deployment (but not deployed) in the cloud. The cases where the exhibited traffic seasonality is finer-grained (daily) may require moving the entire web serving solution into the cloud.
This cloud infrastructure could be activated in case of disaster so as to handle the load while the on-site infrastructure is being reinstated, bringing customer facing downtime from days to hours.
However, this scenario requires guaranteeing data freshness by more frequent snapshots and several complex disaster recovery test to ensure the cloud infrastructure would be deployed and function as expected.



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Comments

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