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Symantec Data Protection Troubleshooting for

reserving motels online can result in huge privacy complications for you | Real Questions and Pass4sure dumps

if you happen to're traveling, inns are alleged to be your area of refuge. in any case, it feels comforting to have a comfy and standard place of rest in a brand new vicinity.

no matter if they love it or not, they place a fine deal of have confidence in resort staff to offer protection to or privacy. They depart their belongings out whereas housekeeping tidies up, they believe the room is free of bugs, and they are expecting hotel staff now not to undercover agent on us with hidden cameras. in many methods, motels put us on the mercy of their hosts.

however how about digital believe? do they count on hotels to give protection to their digital privateness the same means as their actual privateness? as it seems, data protection is not an blanketed amenity for many lodge chains.

vacation condominium properties may additionally have a creepy hidden cam difficulty

How do lodges leak personal statistics online

A analyze launched through Symantec, makers of the famous antivirus program, revealed that two out of three inn sites have accidentally leaked reserving details and private information to 3rd parties.

resorts use web-primarily based reserving capabilities to make reservations extra effortless for visitors and more straightforward for employees. Managing guest statistics, including passport assistance, email addresses, credit cards and whole names, is a good deal more straightforward if you happen to harness a digital database to do the heavy lifting.

despite the fact, as a result of these databases receive counsel through an online connection, this makes them as susceptible as anything online to hackers and bad actors.

according to Symantec's analyze, data compromises usually turn up when inns e-mail your booking affirmation back to you. This statistics, for many lodge chains, isn't encrypted or hosted in a cozy place.

in fact, the records is regularly shared with third-birthday celebration provider providers corresponding to social networks like facebook and advertisers throughout the cyber web. The intent, interestingly, is to tailor ads to your commute wants and location. a probable story, as always.

Will I be affected by inn statistics leaks?

as it stands, Symantec reviews that cybercriminals are typically attracted to excessive-ranking company gurus and government employees. These sorts of aims customarily have better value counsel or price range to compromise, so commonplace travelers and pleasure-seekers don't seem to be a precedence for criminals concentrated on motels.

That being stated, there are some finest practices that you may take to keep your records cozy when booking resorts as well as traveling overseas. For starters, making sure you aren't logged in to facebook whilst you ebook tickets prevents any transmission of statistics to its servers by way of unsecured connections.

in any other case, booking your rooms while in a personal browser window (like Chrome's Incognito Mode) will at the least stop current ad trackers from making the hyperlink between your reserving and your other looking habits.

When it involves receiving affirmation for your reserving, a good suggestion would be to make an option e-mail address that you just use best for go back and forth linked exchanges. This e-mail tackle may also be cut loose your main account and would not must consist of own advice in the settings like your name and address.

Your face is your key at this new high-tech lodge

the use of a lodge booking provider is also a good idea, however these sites can also be hit and miss when it involves privateness. in case you e-book through a provider like or one in all its opponents, be certain to study the web page's privateness policy so you understand how your records is being dealt with.

a safe region to dwell?

given that cybersecurity is fitting an ever-existing subject for agencies, inn chains are within the procedure of complying to facts defense legal guidelines enacted by governments. The eu lately handed the well-known information protection regulation, which a few lodges declare their systems will soon be compliant with.

until they know for certain that their hosts have their optimal digital interests in intellect, the best thing you as a vacationer can do is be privy to your online presence. do not simply examine even if your lodge room looks satisfactory or low in cost.

The first-rate of a hotel's website can be a telltale sign of a protection risk. If the web page you are reserving through looks defunct or sketchy, it really is a purple flag for unsecured connections.

web site caught secretly live-streaming hotel guests

security cameras can also be extraordinarily helpful for shielding your domestic and making you consider comfortable. however, as it turns out, they can have a depressing side. currently, it changed into found out that a website became live streaming people whereas they were having private moments of their inn rooms. This story will give you the heebie-jeebies.

click or tap to learn the way they acquired away with it for so long and the way they got caught.

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subsequent happening Now New listing names worst companies for statistics privateness

Symantec offers protection software for windows cell | Real Questions and Pass4sure dumps

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Symantec Corp. is set to dramatically expand its cell safety choices this week, including VPN (virtual private network), statistics encryption, antispam and other features.

The enterprise will unveil on Monday its first suite of security utility for Microsoft Corp. home windows cell instruments. to this point Symantec has best offered antivirus application for windows mobile and a suite of antivirus and firewall for Symbian, stated Paul Miller, managing director of cell and instant at Symantec. The suite is known as Symantec mobile protection Suite 5.0, to fit the upcoming version 5.0 of the business’s suite for the Symbian OS. Symantec plans to show off the new application at the CTIA instant display in Orlando.

companies are becoming greater concerned about cellular protection as they put sensible phones and other handheld contraptions within the palms of roving worker's. meanwhile, they're faced with an array of laws on the coping with of statistics, and some high-profile losses of deepest guidance in the container have made cell records insurance policy a scorching subject matter. Symantec goals to prolong the equal kind of coverage it gives PCs.

computing device viruses dwarf the variety of threats geared toward cellular contraptions these days, so businesses haven’t considered as a great deal of a need for protection on them, Miller noted. but when left unguarded, handsets could become attackers’ subsequent fundamental direction into enterprise networks, he pointed out. So Symantec has added new equipment to cozy instruments whereas they’re getting used and mixed these with features to evade statistics loss if they are misplaced or stolen.

businesses could be able to encrypt every thing on a handheld device and its storage playing cards, or just selected files, the usage of 256-bit AES (superior Encryption commonplace) encryption. either way, entry to the statistics is blanketed by the use of a username and password when starting the device or trying to entry the encrypted folder, Miller observed. The antivirus element keeps users from gaining access to contaminated data and lets administrators continuously scan devices. The antispam function can clear out and delete spam textual content messages, Symantec stated.

additionally included are an IPSec (internet Protocol safety) VPN, a device for retaining contraptions that don't seem to be compliant with guidelines off the community, and a mechanism for protecting personnel from the usage of chosen points of a device.

If a device falls into the incorrect hands, administrators can wipe off the records remotely or set it up so the facts is eradicated after a certain number of password tries. The suite additionally comprises an audit log feature that continues song of activity on the equipment so the enterprise can see everything that came about after it fell out of the worker’s arms, Miller observed.

one of the vital technology within the suite, essentially VPN and encryption, is licensed from BlueFire safety technologies, in response to Symantec spokesman Brian Modena.

The suite is scheduled to turn into purchasable in may via Symantec and enterprise resellers and gadget integrators. cell operators may additionally additionally promote the suite as optional or standard facets on devices, or on a monthly service basis, Miller observed. A consumer version of the suite, referred to as Norton cellular protection 5.0 for windows mobile, is due in the identical time frame. The suite is priced at CDN$93.00 per device.

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Symantec's issues Run Deeper Than just an Audit Committee Probe | Real Questions and Pass4sure dumps

even though the 30%-plus decline seen in Symantec's (SYMC - Get file) shares on Friday has a lot to do with the audit committee probe it just disclosed, it be with the aid of no potential the most effective factor.

Disappointing tips for the company's commercial enterprise safety utility and services business is additionally weighing, and it does a whole lot to elevate fresh questions about the business's standing in a really competitive IT security market.

After the bell on Thursday, Symantec mentioned March quarter (fiscal fourth quarter) profits of $1.23 billion and non-GAAP EPS of $0.forty six, beating consensus estimates of $1.19 billion and $0.39. The company's business safety salary rose 1% yearly to $620 million after adjusting for currency swings and the Oct. 2017 sale of Symantec's web page safety certificates enterprise. Its client Digital safety income rose 6% to $614 million after adjusting for foreign exchange and the Feb. 2017 acquisition of id theft-coverage firm LifeLock.

however Symantec also guided for June quarter profits of $1.135 billion to $ hundred sixty five billion and EPS of $0.31 to $0.35, beneath a consensus of $1.18 billion and $0.forty one. And it guided for fiscal 2019 (ends in March 2019) salary of $four.76 billion to $four.9 billion and EPS of $1.50 to $1.sixty five, beneath a consensus of $four.ninety three billion and $1.80.

Of path, the outlook is being overshadowed right now with the aid of Symantec's disclosure that its board's audit committee "has commenced an inner investigation in connection with issues raised by way of a former worker."

The company adds the audit committee "has retained unbiased counsel and other advisors" to aid its investigation, that its effects and advice "could be field to alternate in line with the result of the Audit Committee investigation" and that it be not going that the probe will be comprehensive in time for Symantec to file its fiscal 2018 annual report "in a well timed manner."

Symantec's inventory plunged greater than $9 to below $20 following the news. Shares are actually at their lowest degrees when you consider that mid-2016, and are also returned at degrees first reached in 2004. at least eight sell-facet research corporations have issued downgrades.

while or not it's handy to place the entire blame for this on a whistleblower probe whose consequences could very smartly be critical, to accomplish that can be to let Symantec off the hook for income tips that appears fairly disappointing. primarily when one appears at the specifics.

On its profits name, which primarily featured no doubt-and-reply session, Symantec referred to its advice implied flat June quarter and financial 2019 profits boom on an biological groundwork. It additionally forecast that commercial enterprise security salary could be down through 2% on an organic foundation in fiscal 2019, and an unspecified percentage within the June quarter. This may be offset via modest biological for the purchaser Digital safeguard phase, which closing quarter offset a small subscriber decline by means of becoming its commonplace salary per user (ARPU).

In a vacuum, the commercial enterprise protection assistance would already appear vulnerable. but it looks worse when one remembers that corporate IT spending has been fairly amazing this yr, with rather just a few massive-identify enterprise tech firms posting solid revenue reports. And it looks worse nonetheless when one remembers that safety spending continues growing sooner than IT spending in frequent, as commercial enterprise terrified of being the next victim of an incredible records breach make log off on large investments in community, endpoint and cloud security products.

For a long time, there became optimism among buyers that Symantec might hold its personal in this atmosphere, however its organic business security growth wasn't precisely stellar. The business's $4.65 billion 2016 buy of peer Blue Coat (an enormous player in the secure web gateway hardware/application market) became smartly-obtained, and a salesforce restructuring performed closing 12 months gave the impression to be paying dividends.

however's secure to say that a good deal of this optimism is long past following Symantec's latest information, which implies the business will lose significant business share between now and March 2019. BTIG's Joel Fishbein, who downgraded Symantec to neutral final nighttime, says the outlook makes his firm wonder "what, past accounting alterations, is happening in the [Enterprise Security] company."

From the outside searching in, it looks as if an absence of focus may be hurting Symantec. The company's security product line is massive, protecting everything from gateways to email encryption to malware evaluation to forensics to risk analytics. This puts Symantec in competitors with many security pure-performs that have been becoming swiftly (feel Palo Alto Networks (PANW - Get report) or Proofpoint (PFPT - Get document) ), as neatly because it giants who have made turning out to be security revenue an immense precedence (think IBM  (IBM - Get document) or Cisco methods (CSCO - Get record) ).

might be making the circumstance worse: there has been a deluge of funding for safety tech startups in recent years -- startups who had been using that capital to aggressively rent salespeople and compete for commercial enterprise offers. This year has already considered two fantastic protection tech IPOs -- Zscaler (ZS and Carbon Black  (CBLK -- and greater are probably on the manner.

There don't seem to be any effortless fixes that Symantec can observe to place its business protection company on greater footing in this kind of competitive environment. And the undeniable fact that management has to cope with an audit committee probe whereas it looks for answers is certain to make things even more durable.

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Quest Software Merging vRanger, NetVault Into Data Protection Platform | real questions and Pass4sure dumps

Quest Software outlined to its solution provider partners some upcoming changes to its data protection software which involves gradually bringing its two primary solutions together as part of a single platform

Quest unveiled its plans as part of the company's annual channel partner conference, held this week in Dana Point, Calif.

John Maxwell, vice president of product management, outlined a roadmap for Quest's data protection software that includes continual upgrades of its vRanger and NetVault storage offerings while gradually bringing them together into a single scalable data protection platform.

Quest in early 2008 acquired Vizioncore, which developed vRanger, which provides a comprehensive data protection platform for VMware virtualized environments.

Quest followed that up with the acquisition late last year of data protection software vendor BakBone, developer of the NetVault backup and recovery offering for physical IT infrastructures.

Going forward, Maxwell said, Quest plans to add physical infrastructure backup capabilities from NetVault to vRanger while adding vRanger's virtual infrastructure capabilities to NetVault. Eventually the two will come together as part of a single platform with a common management architecture while still being available as separate products for customers with specific requirements, he said.

Quest this month plans to release vRanger 5.3, which will come with target-based dedupe technology from NetVault. That technology, SmartDisk, will be available to vRanger customers for $945 per instance, and can reduce file sizes by a factor of 10:1 to 70:1, Maxwell said.

"It can scale for customers backing up several petabytes of data, but at a single flat price," he said. "You can go to a customer and say you can offer an attractive dedupe offering, and then wrap your hardware and services. This is exciting. No one in this environment has enterprise-class dedupe priced at $945 per instance. And most customers only need one instance."

vRanger 5.3 will also feature increasingly tighter integration with VMware, Maxwell said. vRanger 5.2 was the first backup software to support VMware's vSphere 5, and vRanger 5.3 will be the first to support the VMware vStorage Virtual Machine File System (VMFS), a high-performance cluster file system for managing virtual machines.

vRanger 5.3 will also allow users to search for data in virtual machines, Maxwell said. "No longer will customers need to know which VM data sits on," he said.

Early next year, vRanger will also start supporting physical storage backup devices, including tape, he said.

Quest is planning to offer major upgrades to NetVault every six months or so, Maxwell said.

NetVault will support more heterogeneous environments in the future, including virtualized server environments. "We won't just support Hyper-V and VMware virtual machines in a stand-alone fashion," he said. "Next year, you will be able to restore Hyper-V data into a VMware VM, and VMware data into a Hyper-V VM."

Next year will also see Quest integrate NetVault as the data protection backbone for its Recovery Manager technology for managing Microsoft applications including Exchange, SharePoint, and Windows Server Active Directory, as well as with its LiteSpeed technology for managing Oracle and SQL databases, Maxwell said.

Maxwell also introduced the Quest Unified Data Protection, or QUDP, platform, which next year will bring vRanger, NetVault, Recovery Manager, and LiteSpeed into a common platform with a single management interface across heterogeneous physical and virtual environments and through the cloud.

Next: Bringing NetVault, vRanger Together

NetVault and vRanger will become plug-ins to QUDP, Maxwell said.

"Quest is the only company to allow customers from the smallest to the largest to use the same technology, or to grow their technology as their business grows," he said. "Symantec? They have Backup Exec and NetBackup, and those two don't talk to each other."

Walter Angerer, senior vice president and general manager for Quest's data protection business, said that by going with a platform approach, Quest makes it easier to protect customer and partner investments in data protection as customer data grows.

"For partners, once the platform is in place, the customer learns one set of problems and how to configure protection, and will not have to retrain," Angerer said.

Maxwell also said that Quest, with its planned enhancements to its data protection software, is ready to help its solution providers differentiate themselves from the competition.

"Let's be frank," he said. "Do you want to be just another Symantec reseller? That's a commoditized offering, and maybe gives you 7 or 8 percent margins."

Quest, on the other hand, has invested to heavily in helping partners be successful.

For instance, thanks to investments in demand generation, about 60 percent of vRanger sales come from the 30,000 search engine hits the software gets every months. "We are getting the word out to the market that they are a viable vendor to work with," he said.

Quest is also investing heavily in partner training, which Maxwell said is important as more of the data protection business goes to virtualized environments and the cloud.

"If you don't know what a VMDK or ESXi or other acronyms are, you need to learn," he said. "Some other reseller out there knows what they mean."

Maxwell said that Quest also knows that it is still a relatively small competitor when compared to companies like Symantec and EMC, and so it is developing strategic partnerships with other vendors to address more opportunities.

For instance, he said, Quest is one of two data protection software vendors to tie its dedupe software with EMC's Data Domain dedupe hardware appliances. "So if a customer chooses a hardware centric approach to dedupe, we'll support it," he said. "If they want a software approach, we'll provide it."

Angerer said that if a customer is set on buying Data Domain, a Quest solution provider should not fight the choice.

"Such a customer wants a high-end solution," Angerer said. "But on the other hand, they provide a great dedupe solution. If the customer buys Data Domain, it is not looking at a lower-cost alternative. So don't fight them."

Nicolas Heisdorffer, enterprise technology sales manager for Alliance Technologies, a Des Moines, Iowa-based solution provider and Quest Software partner, said he is impressed at how the vendor is folding its NetVault data protection software in with its other products.

"Two years ago, they asked Quest to help us with a unified message about its products," Heisdorffer said. "And now they're doing it. It's all about taking a complex environment and adding simplified technology around it."

Quest has become the largest $800 million company no one ever heard of, Heisdorffer said.

"Quest is building a great story around data protection," he said. "It's taking what can be a complicated problem, and solving it by bringing data protection, deduplication, and continuous data protection together into a solution."

Next: Quest For A Complete Solution

Heisdorffer cited Quest's ability to provide bare metal recovery of customers' applications to hardware that is different from the servers on which those applications originally ran, or the ability to recover a virtual machine to a different hypervisor, as examples of building solutions that appeal to all potential customers.

"At one time in the past, no one would have thought that Oracle databases and SQL databases would be found in the same enterprise," he said. "Now it's common. I'm convinced Microsoft will catch up to VMware in virtualization as well."

USB 3.0 SuperSpeed Isolator Features Re-Clocking Design | real questions and Pass4sure dumps

Saelig Company Inc. has introduced the Alldaq ADQ-USB 3.0-ISO series of USB 3.0 isolators, which support the full USB 3.0 SuperSpeed data rate of 5Gbit/s. This allows USB 3.0 SuperSpeed devices to be electrically isolated from a host PC or other peripherals at full performance. The re-clocking design guarantees a stable USB connection at all speeds. The ADQ-USB isolators can be used for the electrical isolation of USB measurement instruments to avoid ground loops to solve problems in industrial and automotive applications as well as in professional sound studios and event and show equipment.

The ADQ-USB 3.0-ISO isolators automatically detect SuperSpeed (5Gbit/s), High-Speed (480Mbit/s), Full-Speed (12Mbit/s) or Low-Speed (1.5 Mbit/s) connections. The model ADQ-USB 3.0-ISO-PS includes a +5 V power adapter with a lockable 5.5mm barrel connector (bayonet lock) for a safety. For industrial and automotive applications, the ADQ-USB 3.0-ISO-W version can accept 10 to 36 VDC from an external power source via a 2-pin lockable Phoenix-type connector to power devices with up to 900 mA. The external power input is protected against reverse polarity and short-circuits.

The isolation voltage between PC and USB device is 1kV (continuous) for the model ADQ-USB 3.0-ISO-PS and 1.0kV (< 60s) for the model ADQ-USB 3.0-ISO-W. The ESD protection of the data lines is ensured by transient-voltage-suppression diodes up to ±12kV (contact discharge) and ±15kV (air-gap discharge) according to IEC 61000-4-2. Without an external power supply the USB isolator can source up to 200mA at the device port. For USB devices requiring more current, the external power supply version ADQ-USB 3.0-ISO-W can provide 900 mA according to the USB 3.0 specification. The Alldaq USB 3.0 isolators are compatible with Windows, MAC OS and Linux systems, and downward-compatible with USB 2.0/1.1/1.0 equipment.

Housed in a robust aluminum housing with rubber bumpers and designed for an operating temperature from -20 to +70degC, the Alldaq USB 3.0-ISO isolators are suitable even for applications in harsh environments. An optional DIN rail mounting kit is also available for permanent installations.

The ADQ-USB 3.0-ISO can protect computers and USB devices effectively against interference voltages, while also eliminating ground loops. Typical applications include: electrical isolation between measurement instruments and PCs, rejection of ripple pickup in studio equipment, removing differing ground potentials in industrial control equipment, and protection against voltage peaks in automotive set-ups. 

Compact in size (3.6" x 2.5" x 1.3" - L x W x H incl. rubber bumpers) and weight (4.5oz) the ADQ-USB 3.0-ISO series of USB3.0 isolators are made in Germany by Alldaq, a prominent manufacturer of a wide range of measurement solutions for use in industry, research, servicing, and education; they are available now from Saelig Company, Inc. Fairport NY.

Network Design Strategies | real questions and Pass4sure dumps

This chapter, from Upgrading and Repairing Networks, 5e, looks at the network's logical and physical design to assist your planning when creating a new network.

This chapter is from the book 

Many types of networks were discussed in Chapter 1, "A Short History of Computer Networking," from ARPANET to TCP/IP. And in Chapter 2, "Overview of Network Topologies," you learned about the various topologies you can employ when designing and creating a local area network (LAN), and they also looked at some scenarios in which several networks were connected to form a wide area network (WAN). In this chapter, they will look at another aspect of creating a network: the network's logical and physical design. The physical aspects of your LAN will depend on the underlying physical transport technology—Ethernet or Token-Ring, for example, or possibly ATM, which is supported as a LAN protocol in products such as Windows 2000/XP, Windows Server 2003, and Linux. Depending on which technology you use, there will be one or more LAN topologies from which to choose.

Before you can begin to design a physical network, however, you first must determine your needs. What services must you provide to your user community? What are the resources you'll need? If you have to compromise, what will it take to satisfy the most users or to provide the more important services? You then will have to take into account network protocols, applications, network speed, and, most important, network security issues; each of these figures into a network's logical design. Another important factor your management will probably force you to consider is cost—you can't forget the budget. These factors make up the logical design for your network. You first should decide what you need and what it will take to provide for those needs.

If you are creating a new network and purchasing new applications, you will probably spend most of your time considering the licensing and other financial costs (training users, network personnel, and so on). If you are upgrading older applications, several other factors come into consideration. Many applications that were coded using COBOL, BASIC, FORTRAN, and other languages that helped jumpstart the computer age may have built-in network functionality based on older proprietary network protocols. If this is the case with your network, you have to consider several things. What will it cost to update thousands of lines of code (or more) to more modern versions of the same programming language? What will it cost to upgrade these programs to newer object-oriented languages? To save money, can you upgrade part of your network and use gateway hardware/software to connect to older network components?

Because of the costs associated with coding applications that were created many years ago, and the expenses that will be required to update them to modern programming languages, you may be forced to maintain legacy applications for a few years while replacement applications are designed and created. You may find a packaged application that can be used to replace older programs. This problem will apply mostly to proprietary computer architectures, instead of Windows or Unix platforms. If you can simply make minor changes and compile the source code so that it will run on a newer operating system, your costs will be much less than if you have to re-create the applications your users need from scratch. Another cost associated with upgrading to new programs is training users and help-desk personnel.

When you plan a logical network design, you can start from one of two places. You can design and install a new network from scratch, or you can upgrade an existing network. Either way, you should gather information about several important factors before you begin the logical design. For example, depending on the services that will be provided to clients, you might need to analyze the possible traffic patterns that might result from your plan. Locate potential bottlenecks and, where possible, alleviate them by providing multiple paths to resources or by putting up servers that provide replicas of important data so that load balancing can be provided. The following are other factors to consider:

  • Who are the clients? What are their actual needs? How have you determined these needs—from user complaints or from help-desk statistics? Is this data reliable?
  • What kinds of services will you provide on the network? Are they limited in scope? Will any involve configuring a firewall between LANs? And if so, that still doesn't account for configuring a firewall to enable access to the Internet.
  • Will you need to allow an Internet connection for just your internal network's users, or will use you need to allow outside vendors access to your network? One example that comes to mind is the Internet Printing Protocol (see Chapter 24, "Overview of the TCP/IP Protocol Suite"). What will it cost to evaluate what kind of services user groups need to access from the Internet? Will you need to allow all users to use email—both within the internal network and through the firewall on the Internet? The same goes for what sites users will be allowed to access using a network browser and other network applications. Will you have users who work from home and require dial-in or VPN access through the Internet?
  • Can your users tolerate a little downtime now and then due to network problems, or is it necessary to provide a high-availability network? Will you need clustered servers to provide for a high degree of uptime, or do your users' applications not suffer from a temporary loss of the use of a server? To provide for maximum uptime, can you afford to build redundancy into your network? For example, Chapter 2 discusses redundant topologies that can be used to prevent a single point of failure from making the network (and its resources) unavailable. Chapter 11, "Network Attached Storage and Storage Area Networks," describes methods you can use to mirror data at geographically distant locations.
  • In an existing network, will you keep the current protocol or upgrade to a different protocol standard? If you create a network from scratch, what factors should affect your network protocol decision? Ethernet is the most popular LAN technology in the world today. TCP/IP is the most popular protocol suite that runs on Ethernet. Yet there are cases in which other technologies have their niches. Consider the implications (such as support costs and security) to maintain older, proprietary protocols.
  • Who Are Your Clients?

    This seems like a very simple question. However, I'm not saying, "What are your clients' names and how well do you know their children?" I am referring instead to your knowledge of the job descriptions for the users on the network. You need to assess work patterns for various departments so that you can appropriately place servers, high-bandwidth links, and other such things in the appropriate physical location of the network. If most of the network traffic you expect to see will come from the engineering department, you'll need to provide that department with a large data pipe. In Chapter 4, "Upgrading Strategies and Project Management," you'll find more information about surveying the user community to come up with a plan that places resources where they are needed.

    What Kinds of Services or Applications Will the Network Offer?

    Of course, everyone knows that the most important function of a network today is to support multiuser gaming. Seriously, though, you need to make a list of the kinds of applications currently in use, as well as a list of those requested by users. Each application should have a written risk assessment document that points out potential security problems, if any. Typical network applications today include FTP, telnet, and, of course, browsing the Web. There are "secure" versions of these applications and there are versions that leave a door wide open into your network. Whatever list of applications you chose to support over the network, keep in mind two things:

  • Is the application safe? Most applications today come in secure versions or can be used with a proxy server to help minimize the possibility of abuse. Yet, as they all have seen, even the largest corporations are targets at times, and those companies have the staff that should be able to prevent these things from happening. Because proxy servers are an important component of firewalls, this subject is covered in greater detail in Chapter 45. If you want a secure network, this is highly recommended reading!
  • Does one application overlap another? Every user has his or her favorite application. Some people like one word processor, whereas others prefer a different one. But when dealing with applications or application suites (such as Microsoft Office), you'll find it better to make a decision and stick with a single product if it can satisfy the needs of your users. They might not like it, and training might be necessary, but supporting multiple applications that do the same thing wastes money and leads to confusion.
  • A commonly overlooked method for getting data files out of a network and onto the Internet is to simply send the files as an attachment to an email. So if you think you've blocked file transfers by disabling FTP access through the firewall, this example should show that you really do need to do a thorough evaluation of any new application or service you will allow on the network. New applications should be justified with facts that show why they are needed. If an existing application can be used to accomplish the same goal, why do you need another application? Should you retire the older application and use a newer one? Pay attention to the details. And don't forget to test new applications to ensure that they perform as expected. The same goes for older applications—will they work on the new or upgraded network?

    Lastly, do you monitor network usage? Do you want to permit users to spend their days browsing the Net, or checking personal email while at work? Many companies have policies that apply to using the telephone for personal business. Do you overlook this situation when giving users email capability? Are you preventing access to sites that are obviously not business-related?

    What Degree of Reliability Do I Require for Each Network Link?

    Just how much downtime is acceptable? For most users, the answer would be zero. Important components of your network, such as file servers, should have fault tolerance built in from the bottom up. In large servers, you'll find dual-redundant power supplies (each connected to a separate UPS), and disk arrays set up using RAID techniques to provide for data integrity in the event that a disk goes south. If a link between two offices needs to be up 100% of the time, you should plan for multiple links between the two sites to provide a backup capability. In this case, you also can justify the cost of the extra link by using load balancing so that network response time is improved. And, if you are using multiple links to remote sites, it's always a good idea to have more than a single path to the site. At one site this author worked at, there were redundant power lines bringing electricity into the site—side-by-side. If a tree falls, will it bring down one or both of those power lines?

    Another technology that can be used to provide an extra layer of redundancy, as well as high-speed access to storage devices, is the Storage Area Network (SAN). A SAN is a network that is separate from the LAN and contains only storage devices and servers that need to access those devices. Because the network bandwidth is not shared with LAN users, multiple servers can access the same storage. If one server fails, other servers can be configured to provide redundant access to the data. Also, the same RAID and other redundancy techniques used for storage devices that are directly attached to a server (such as the SCSI hardware and protocols) can be used on a SAN.


    The terms RAID and UPS are important in today's networks, as is the concept of load balancing and dual-redundant power supplies in large networks. You can find out more about RAID (Redundant Array Of Independent Disks) and UPSs (uninterruptible power supplies) by reading Chapter 5, "Protecting the Network: Preventative Maintenance Techniques." For more information about SANs, see Chapter 11.

    The old saying "If it ain't broke, don't fix it" doesn't apply to networks. You should always be proactively looking for potential single points of failure and doing something to fix them. By building redundancy into the network design at the start, you'll save yourself a lot of grief in the future.

    Chapter 5 can give you more suggestions about using clustering, backups, uninterruptible power supplies, and other techniques that can keep the network up and running.

    Choosing a LAN Protocol

    Today the de facto protocol of choice has to be TCP/IP. However, other protocols have their place in some vertical markets. In this book, they talk about NetWare. NetWare has been around so long that you might find you have no choice when designing an upgrade but to keep using IPX/SPX, depending on the applications your network uses. However, even NetWare has moved toward using TCP/IP as the underlying protocol. This is basically the case for version 5.x and 6.x of NetWare. Older NetWare networks should upgrade, if possible, to one of these newer versions. If you will be connecting the network to the Internet, TCP/IP will be a necessity. Even if you don't expect to have an Internet connection, you'll find that choosing TCP/IP is a more practical choice today because most applications work with it and there is a large market of trained professionals who can be hired to manage a network built on TCP/IP. NetWare 6.x provides backward compatibility with IPX/SPX for the most part, but newer features such as the iPrint—which uses the Internet Printing Protocol—require TCP/IP.

    In addition to transport protocols such as TCP/IP and IPX/SPX, you must consider application protocols that can be used on the network. For example, to simplify administering configuration information for a large number of computers, you might want to use the Dynamic Host Configuration Protocol (DHCP), which is discussed in Chapter 28, "BOOTP and Dynamic Host Configuration Protocol (DHCP)." If you want to provide a central name resolution service, you might choose the Domain Name Service (DNS), which is covered in Chapter 29, "Network Name Resolution." If you are going to operate a Windows network that has pre–Windows 2000/XP clients, you might need to use the Windows Internet Naming Service (WINS) for backward compatibility.

    So when thinking about a network protocol, remember that it's not just one protocol you need to worry about. After you've decided which protocols are necessary, research the security implications of each.

    It's Virtually Universal: TCP/IP

    For all practical purposes, the standard LAN protocol today is TCP/IP. This is partly due to the rapid growth of the Internet, and the necessity of most businesses of having a Web presence, as well as the large number of vendors that have adopted this protocol suite. If your LAN is still using an older proprietary network protocol, you should seriously consider what it would take to upgrade to TCP/IP. Currently, TCP/IP version 4 is the most widely used protocol. In the future you can expect that the next version (IPv6) will start to find its way from the core of the Internet out to the edge, where your network resides. While technologies such as Network Address Translation (NAT) are widely employed to remedy the problem associated with the limited address space provided by IPv4, IPv6 will enable a much larger address space. Combine that with Network Address Translation, and the long-term bets are going to be on IPv6, or possibly some of the features that are part of IPv6. In addition to giving you a larger address space, IPv6 includes other important features. Those that will affect your network the most are security mechanisms, which will only become more important as Internet commerce continues to grow.


    For a detailed introduction to TCP/IP, see Chapter 24, "Overview of the TCP/IP Protocol Suite"; Chapter 25, "Basic TCP/IP Services and Applications"; and Chapter 27, "Troubleshooting Tools for TCP/IP Networks."

    There is one very important reason you should consider TCP/IP as a LAN protocol: There are more trained professionals knowledgeable in TCP/IP than any other LAN protocol at this time. It is interesting to note that in Windows NT 3.51, the default network protocol was Microsoft's implementation of IPX/SPX (NWLink). In Windows NT 4.0 (and successive operating systems, from Windows 2000, XP, and Server 2003), the default network protocol is TCP/IP.

    If your network is composed of several operating systems, from Windows to NetWare to Unix and Linux, then the bottom line is that TCP/IP is the lowest common denominator that will allow the easiest connectivity and interaction between all of these. Even Microsoft's now-legacy NetBIOS/NetBEUI protocols have been adapted to run over TCP/IP.

    Novell's NetWare Version 6.5

    NetWare was perhaps the first attempt at seriously providing a LAN protocol that was easy to use. The basic file and print services offered by early versions of NetWare were much better than other solutions available at that time. After it became established in the business community, NetWare became the network solution of choice in many business environments that used the PC. Microsoft countered this success with its LANManager products, which were also marketed by other vendors in their own way, such as the Pathworks solution from Digital Equipment Corporation.

    Today NetWare is a totally revamped solution to LAN connectivity. It provides many new features that are addressed to specifically make use of the Internet, and allow mobile users to connect to their home networks, as well as to enable NetWare users to make connections to outside networks. For example, the iPrint feature enables NetWare users to print to a printer on a remote network. For example, instead of sending a catalog that may be out of date in a month or so, you can use iPrint to periodically send specific information relevant to each customer, by printing it directly to the customer's printer.

    And NetWare's iFolder allows mobile users to synchronize data stored on remote computers (such as a laptop computer) with the data stored on the company's network. Microsoft and other vendors offer similar features. However, the point to remember is that if you already are a NetWare user, you don't have to throw out your existing investment and move to a Microsoft network, or even a Unix/Linux environment. NetWare has changed as the market has changed, and you might find it less expensive to upgrade to NetWare 6.5 than to migrate to another platform. The bottom line involves not just the cost of migrating to another operating system, but the costs involved with retraining your network administrative personnel in new technology.

    Because NetWare 6.5 is so tightly integrated with the IP protocol, and also offers backward compatibility with IPX/SPX, admins for existing NetWare networks should consider upgrading to NetWare 6.5 as well as considering other options.

    If you want to move to Linux, Novell makes it easy by incorporating an enhanced version of NetWare 6.5 and SuSE Linux into its Novell Open Enterprise Server. Open Enterprise Server supports both Linux and NetWare-specific software and features, enabling you to move to Linux gradually.

    Other LAN/WAN Protocols

    The distinction between LAN and WAN (wide area networking) protocols is beginning to blur. Ethernet was once considered to be a LAN protocol. As time has passed, other technologies, such as Token-Ring, have become minor players in the LAN world. Yet the opposite is true of Ethernet. It has grown from a modest specification endorsed by Intel, DEC, and other vendors, such that it now can be considered a WAN protocol. The capabilities introduced by current LAN technologies are beginning to erode the differences between a LAN and a MAN (metropolitan area network). When the fourth edition of this book was published, Gigabit Ethernet was starting to fall into the inexpensive range of network topologies. That trend has continued and now 10Gigabit Ethernet (10GbE) is frequently being used in enterprise data centers. Today you may be using 100BASE-T for connecting client computers to the network, and Gigabit Ethernet to connect network segments via the network backbone. In some cases your network might even be exclusively based on 10GbE.

    What does this mean to a network administrator today? With 10Gigabit Ethernet, you can use TCP/IP not only to create a local area network backbone, but to extend that reach to a metropolitan area network. And because TCP/IP is so intertwined with Ethernet, you can achieve an end-to-end MAN link that uses TCP/IP over faster Ethernet connections. Instead of employing more expensive solutions, such as SONET, you can now connect branch offices in the same geographical area using just TCP/IP.

    You may not have to worry about installing expensive equipment used by SONET and other typical MAN protocols. Still, for the long haul—for example, between different cities—other protocols such as ATM and Frame Relay will come into play.


    For more information about SONET, ATM, and Frame Relay, see Chapter 15, "Dedicated Connections."

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    PMI [15 Certification Exam(s) ]
    Polycom [2 Certification Exam(s) ]
    PostgreSQL-CE [1 Certification Exam(s) ]
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    QAI [1 Certification Exam(s) ]
    QlikView [1 Certification Exam(s) ]
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    RedHat [8 Certification Exam(s) ]
    RES [5 Certification Exam(s) ]
    Riverbed [8 Certification Exam(s) ]
    RSA [15 Certification Exam(s) ]
    Sair [8 Certification Exam(s) ]
    Salesforce [5 Certification Exam(s) ]
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    SAP [98 Certification Exam(s) ]
    SASInstitute [15 Certification Exam(s) ]
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    See-Beyond [1 Certification Exam(s) ]
    Siemens [1 Certification Exam(s) ]
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    Social-Work-Board [4 Certification Exam(s) ]
    SpringSource [1 Certification Exam(s) ]
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    The-Open-Group [8 Certification Exam(s) ]
    TIA [3 Certification Exam(s) ]
    Tibco [18 Certification Exam(s) ]
    Trainers [3 Certification Exam(s) ]
    Trend [1 Certification Exam(s) ]
    TruSecure [1 Certification Exam(s) ]
    USMLE [1 Certification Exam(s) ]
    VCE [6 Certification Exam(s) ]
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    Vmware [58 Certification Exam(s) ]
    Wonderlic [2 Certification Exam(s) ]
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