EILISHA asked:


Hi, I am thinking about going into a program called a Network Cabling Specialist. It’s a 3 month program(including a interning process at the end of the program).

I have a bachelors in management and organizational development but am unhappy with the pay (I make 14.00 an hour).

I was hoping that i would be able to live comfortably, if I got my education, but that doesn’t seem to be the case. I am currently a project coordinator for a I.T department and am interested in becoming hands-on, with the technical side of I.T instead of the I.T. Business only side.

Please tell me what you think… Do you think the job market is right for me to be making a career change right now? Also, what type of jobs would I be able to get and about how much will they pay to start on the networking technical side?

network management service

raji asked:


1 Introduction

Ad hoc networks are a new paradigm of wireless communication for mobile hosts (which we call nodes). In an ad hoc network, there is no fixed infrastructure such as base stations or mobile switching centers. Mobile nodes that are within each other’s radio range communicate directly via wireless links, while those that are far apart rely on other nodes to relay messages as routers. Node mobility in an ad hoc network causes frequent changes of the network topology. Military tactical operations are still the main

Application of ad hoc networks today. For example, military units (e.g., soldiers, tanks, or planes), equipped with wireless communication devices, could form an ad hoc network when they roam in a battlefield. Ad hoc networks can also be used for emergency, law enforcement, and rescue missions. Since an ad hoc network can be deployed rapidly with relatively low cost, it becomes an attractive option for commercial uses such as sensor networks or virtual classrooms.

1.1 Security goals

Security is an important issue for ad hoc networks, especially for those security-sensitive applications. To secure an ad hoc network, we consider the following attributes: availability, confidentiality, integrity, authentication, and non-repudiation.

Availability ensures the survivability of network services despite denial of service attacks. A denial of service attack could be launched at any layer of an ad hoc network. On the physical and media access control layers, an adversary could employ jamming to interfere with communication on physical channels. On the network layer, an adversary could disrupt the routing protocol and disconnect the network. On the higher layers, an adversary could bring down high-level services. One such target is the key management service, an essential service for any security framework.

Confidentiality ensures that certain information is never disclosed to unauthorized entities. Network transmission of sensitive information, such as strategic or tactical military information, requires confidentiality. Leakage of such information to enemies could have devastating consequences. Routing information must also remain confidential in certain cases, because the information might be valuable for enemies to identify and to locate their targets in a battlefield.

Integrity guarantees that a message being transferred is never corrupted. A message could be corrupted because of benign failures, such as radio propagation impairment, or because of malicious attacks on the network.

Authentication enables a node to ensure the identity of the peer node it is communicating with. Without authentication, an adversary could masquerade a node, thus gaining unauthorized access to resource and sensitive information and interfering with the operation of other nodes.

Finally, non-repudiation ensures that the origin of a message cannot deny having sent the message. No repudiation is useful for detection and isolation of compromised nodes. When a node A receives an erroneous message from a node B, non-repudiation allows A to accuse B using this message and to convince other nodes that B is compromised.

There are other security goals (e.g., authorization) that are of concern to certain applications, but we will not pursue these issues in this paper.

1.2 Challenges

The salient features of ad hoc networks posses both challenges and opportunities in achieving these security goals.

First, use of wireless links renders an ad hoc network susceptible to link attacks ranging from passive eavesdropping to active impersonation, message replay, and message distortion. Eavesdropping might give an adversary access to secret information, violating confidentiality. Active attacks might allow the adversary to delete messages, to inject erroneous messages, to modify messages, and to impersonate a node, thus violating availability, integrity, authentication, and non-repudiation.

Secondly, nodes, roaming in a hostile environment (e.g., a battlefield) with relatively poor physical protection, have non-negligible probability of being compromised. Therefore, we should not only consider malicious attacks from outside a network, but also take into account the attacks launched from within the network by compromised nodes. Therefore, to achieve high survivability, ad hoc networks should have a 2 distributed architecture with no central entities. Introducing any central entity into our security solution could lead to significant vulnerability; that is, if this centralized entity is compromised, then the entire network is subverted.

Thirdly, an ad hoc network is dynamic because of frequent changes in both its topology and its membership (i.e., nodes frequently join and leave the network). Trust relationship among nodes also changes, for example, when certain nodes are detected as being compromised. Unlike other wireless mobile networks, such as mobile IP [21, 48, 34], nodes in an ad hoc network may dynamically become affiliated with administrative domains. Any security solution with a static configuration would not suffice. It is desirable for our security mechanisms to adapt on-the-fly to these changes.

Finally, an ad hoc network may consist of hundreds or even thousands of nodes. Security mechanisms should be scalable to handle such a large network.

1.3 Routing Protocol and Threats

Routing protocols for ad hoc networks are still under active research. There is no single standard routing protocol. Therefore, we aim to capture the common security threats and to provide guidelines to secure routing protocols. In most routing protocols, routers exchange information on the topology of the network in order to establish routes between nodes. Such information could become a target for malicious adversaries who intend to bring the network down. There are two sources of threats to routing protocols. The first comes from external attackers. By injecting erroneous routing information, replaying old routing information, or distorting routing information, an attacker could successfully partition a network or introduce excessive traffic load into the network by causing retransmission and inefficient routing.

The second and also the more severe kind of threats come from compromised nodes, which might advertise incorrect routing information to other nodes. Detection of such incorrect information is difficult: merely requiring routing information to be signed by each node would not work, because compromised nodes are able to generate valid signatures using their private keys.

To defend against the first kind of threats, nodes can protect routing information in the same way they protect data traffic, i.e., through the use of cryptographic schemes such as digital signature. However, this defense is ineffective against attacks from compromised servers. Worse yet, as we have argued, we cannot neglect the possibility of nodes being compromised in an ad hoc network. Detection of compromised nodes through routing information is also difficult in an ad hoc network because of its dynamically changing topology: when a piece of routing information is found invalid, the information could be generated by a compromised node, or, it could have become invalid as a result of topology changes. It is difficult to distinguish between the two cases.

On the other hand, we can exploit certain properties of ad hoc networks to achieve secure routing. Note that routing protocols for ad hoc networks must handle outdated routing information to accommodate the dynamically changing topology. False routing information generated by compromised nodes could, to some extent, be considered outdated information. As long as there are sufficiently many correct nodes, the routing protocol should be able to find routes that go around these compromised nodes. Such capability of the routing protocols usually relies on the inherent redundancies — multiple, possibly disjoint, routes between nodes — in ad hoc networks.

2. Key Management Service

We employ cryptographic schemes, such as digital signatures, to protect both routing information and data traffic. Use of such schemes usually requires a key management service. We adopt a public key infrastructure because of its superiority in distributing keys and in achieving integrity and non-repudiation. Efficient secret key schemes are used to secure further communication after nodes authenticate each other and establish a shared secret session key. In a public key infrastructure, each node has a public/private key pair. Public keys can be distributed to other nodes, while private keys should be kept confidential to individual nodes. There is a trusted entity called Certification Authority (CA) [11, 47, and 26] for key management. The CA has a public/private key pair, with its public key known to every node, and signs certificates binding public keys to nodes. The trusted CA has to stay on-line to reflect the current bindings, because the bindings could change over time: a public key should be revoked if the owner node is no longer trusted or is out of the network; a node may refresh its key pair periodically to reduce the chance of a successful brute-force attack on its private key. It is problematic to establish a key management service using a single CA in ad hoc networks. The CA, responsible for the security of the entire network, is a vulnerable point of the network: if the CA is unavailable, nodes cannot get the current public keys of other nodes or to establish secure communication with others. If the CA is compromised and leaks its private key to an adversary, the adversary can then sign any erroneous certificate using this private key to impersonate any node or to revoke any certificate.

A standard approach to improve availability of a service is replication. But a naive replication of the CA makes the service more vulnerable: compromise of any single replica, which possesses the service private key, could lead to collapse of the entire system. To solve this problem, we distribute the trust to a set of nodes by letting these nodes share the key management responsibility.

3. Push! Photo: Informal Photo Sharing in Ad-Hoc Networks

As mobile camera phones become ubiquitous the practice of photography changes. Camera phone pictures are usually taken with sharing in mind. Meanwhile, publicly sharing photographs online has become increasingly popular with websites such as Flickr. Push! Photo is a mobile photo sharing application where photos can be made public and immediately accessed by anyone nearby. The application also automatically searches for photos on nearby devices to find interesting and relevant photos. Push! Photo shows how it is possible to share digital photos just as easy as paper photos.

Shoot!

Publicize!

Discover!

Enjoy!

3.1 THE PUSH! PHOTO PROTOTYPE

The current prototype of Push! Photo allows photos to be made public, and users can browse their own photo collection as well as those of others nearby. When devices are in proximity of one another, they will automatically start to search each other’s public photo collections for

Photographs relevant to one self. These photos are shown as a multi-picture slideshow, which is extended as new photos are found. To browse photos from an event shown in a particular photo the user can click on that picture in the slideshow. The application will then download all photos from nearby devices taken at that event. In this way, if a user spots an interesting picture in the slideshow, she can easily find more photos from the same occasion. To decide

Whether two photos are from the same event, information about whom else was around and the time of shooting is used. The application implements a discovery service to find other devices when they are within Wi Fi-range. Thus the application is always aware of who else (using Push!Photo) is around at a particular time. As a photograph is taken, the resulting picture is tagged with this information together with the time and the identity of the photographer. The current prototype is an application running on

Pocket PCs with WiFi-cards and external SD-cameras

3.2 RELATED WORK

In previous work with Push! Music [2] music files were replaced with so called media agents which were enabled to autonomously copy themselves between devices over a wireless ad hoc network. The media agents try to find their

way to potential listeners as users meet, and as a song is copied it automatically enters the play list. In this way the users discover new music while passively listening. Other projects have looked at mobile photo sharing. Davis et al. in MM2 uses the notion of co-presence to simplify the decision of with whom to share [1]. Photos are then uploaded automatically to a central web server where the sharing recipients can access the photos. Kohno and Rekimoto instead use GPS information and time stamps to decide if pictures are from the same event or not [4]. This is used to let users easily browse each others photos when standing in a group to serve as a topic of discussion. The system also let users drag and drop pictures between your own and other’s devices. As a contrast, Push! Photo aims to look into how mobile sharing can be simplified by allowing seamless sharing, and using context and tagging to automatically find interesting and relevant photographs

4 Conclusions

In this paper, we have analyzed the security threats an ad hoc network faces and presented the security objectives that need to be achieved. On one hand, the security-sensitive applications of ad hoc networks require high degree of security; on the other hand, ad hoc networks are inherently vulnerable to security attacks. Therefore, security mechanisms are indispensable for ad hoc networks. The idiosyncrasy of ad hoc networks poses both challenges and opportunities for these mechanisms. This paper focuses on how to secure routing and how to establish a secure key management service in an ad hoc networking environment. These two issues are essential to achieving our security goals. Besides the standard security mechanisms, we take advantage of the redundancies in ad hoc network topology and use diversity coding on multiple routes to tolerate both benign and Byzantine failures. To build a highly available and highly secure key management service, we propose to use threshold cryptography to distribute trust among a set of servers. Furthermore, our key management service employs share refreshing to achieve proactive security and to adapt to changes in the network in a scalable way. Finally, by relaxing the consistency requirement on the servers, our service does not rely on synchrony assumptions. Such assumptions could lead to vulnerability. A prototype of the key management service has been implemented, which shows its feasibility. The paper represents the first step of our research to analyze the security threats, to understand the security requirements for ad hoc networks, and to identify existing techniques, as well as to propose new mechanisms to secure ad hoc networks. More work needs to be done to deploy these security mechanisms in

an ad hoc network and to investigate the impact of these security mechanisms on the network performance.

5 Acknowledgments

I would like to thank my friends for their invaluable contributions to this work. I am also grateful to my family and the anonymous reviewers for their comments and suggestions that helped to improve the quality of the paper.

I am grateful to Almighty for His blessings upon me.

6 References

[1] E. Ayanoglu, C.-L. I, R. D. Gitlin, and J. E. Mazo. Diversity coding for transparent self-healing and

fault-tolerant communication networks. IEEE Transactions on Communications, 41(11):1677–1686,

November 1993.

[2] M. Castro and B. Liskov. Practical Byzantine fault tolerance. In Proceedings of the 3rd USENIX

Symposium on Operating System Design and Implementation (OSDI’99), pages 173–186, New Orleans,

LA USA, February 22–25, 1999. USENIX Association, IEEE TCOS, and ACM SIGOPS.

[3] Y. Desmedt. Threshold cryptography. European Transactions on Telecommunications, 5(4):449–457,

July–August 1994.

[4] Y. Desmedt and Y. Frankel. Threshold cryptosystems. In G. Brassard, editor, Advances in Cryptology—

Crypto’89, the 9th Annual International Cryptology Conference, Santa Barbara, CA USA, August 20–24,

1989, Proceedings, volume 435 of Lecture Notes in Computer Science, pages 307–315. Springer, 1990.

[5] Y. Desmedt and S. Jajodia. Redistributing secret shares to new access structures and its applications.

Technical Report ISSE TR-97-01, George Mason University, July 1997.

[6] A. Ephremides, J. E. Wieselthier, and D. J. Baker. A design concept for reliable mobile radio networks

with frequency hopping signaling. Proceedings of the IEEE, 75(1):56–73, January 1987.

[7] P. Feldman. A practical scheme for non-interactive verifiable secret sharing. In Proceedings of the 28th

Annual Symposium on the Foundations of Computer Science, pages 427–437. IEEE, October 12–14,

1987.

[8] M. J. Fischer, N. A. Lynch, and M. S. Peterson. Impossibility of distributed consensus with one faulty

processor. Journal of the ACM, 32(2):374–382, April 1985.

[9] Y. Frankel, P. Gemmel, P. MacKenzie, and M. Yung. Optimal resilience proactive public-key cryptosystems.

In Proceedings of the 38th Symposium on Foundations of Computer Science, pages 384–393,

Miami Beach, FL USA, October 20–22, 1997. IEEE.

[10] Y. Frankel, P. Gemmell, P. MacKenzie, and M. Yung. Proactive RSA. In B. S. Kaliski Jr., editor,

Advances in Cryptology—Crypto’97, the 17th Annual International Cryptology Conference, Santa Barbara,

CA USA, August 17–21, 1997, Proceedings, volume 1294 of Lecture Notes in Computer Science,

pages 440–454. Springer, 1997.

[11] M. Gasser, A. Goldstein, C. Kaufman, and B. Lampson. The digital distributed systems security architecture.

In Proceedings of the 12th National Computer Security Conference, pages 305–319, Baltimore,



network management techniques

yoursolastsummer asked:


I’m not good at writing resumes, but please help me edit for grammer, flow, ect…:

Duties Included PC hardware, operating system, and network troubleshooting, design, and maintenance. Extensive
Knowledge of Windows based operating systems and advanced MS Office skills. Posses strong experience in providing software support for a large enterprise resource planning system, inventory management system, and ecommerce shopping cart system. Extensive experience in providing telephone and remote support to end users. Exercises patience and maintains a friendly demeanor when assisting clients. Experience with basic and advanced networking, home networking and small business networking. Experience with hardware and how to build and take apart PC’s and Servers. Experience with Widows XP, Office 2003/XP, Outlook, Windows Server 2003, IE, Firefox, Norton Ghost, Adobe Acrobat, Wireless Networks, HP Printers/Scanners, Storage Area Networks, Active Directory, and Whitebox Linux,

network management system

Tony Colon asked:


Today’s online social networkers want to have instant, 24×7 access to their social network and the information they need, but are not interested in being tied to a wired Internet connection. To get the most out of your social networking experience, members must have anytime, anywhere access to people in their network. Development of mobile applications that work on all combinations of carriers, platforms and mobile device models would make life a lot easier for the avid social networker.

What is needed is an online social networking provider of aggregation, connectedness, and collaboration technology for an individual’s social network. Mobile technology needs to be built on the new WAP 2.0 standards, designed to enable mobile users of social networking sites to access real-time data on their thriving networks through a variety of wireless devices.

A network connectedness & collaboration solution is for people who want to aggregate all the relationship capital they’ve built up from social networking sites for fast & easy sharing within their very own private network. It needs to be a highly safe and secure relationship capital management platform that can privately separate a user’s professional/business profile from their personal/”here I am being cool…” profile. This suite of networking connectedness applications would allows users to collaborate by sharing calendars, contacts, files, and more.

WAP 2.0 connects cellular phone, PDA, and other mobile users with email, contacts, calendar, and task data in their social networking accounts – on a Treo, Nokia or almost any other SmartPhone or Pocket PC. Users can connect their network(s) using their mobile phone, or using a PDA with WiFi or modem connection.

This technological advance provides a colorful and graphic-rich interface that is available on WAP 2.0 compatible cellular phones, PocketPC devices, PalmOS-based devices, as well as other mobile devices.

Also, an extra benefit would be real-time connection between their account and Outlook on the desktop. This connection would ensure, whether a user is accessing their email, contacts, calendar and tasks via Outlook, remotely with a web client, or on a mobile device, that their information is always accessible. It must provide users with virus and spam-free email, shared calendars, contacts and files, tasks, instant messaging, and more.

Email and calendaring solutions help to aggregate and manage one’s own private network. These web-based tools make managing busy schedules easy, and allow users to instantly schedule meetings with colleagues across their social networks enabling users to automatically send meeting requests and changes to participants. Ideally, it would support the iCal industry standard, which enables social networking site users to coordinate their schedules with users of other iCal-compliant calendaring software.

To be useful, products & services for mobile social networking communication must be compatible with any social networking niche such as: Friend Networking, Business Networking, Common Interest Networking, Dating Networking, Pet Networking, Face-To-Face Meeting Facilitation, Sharing Emphasis, Campus, and every other niche site in between.

Be forewarned that a lot of mobile social networking sites offer their services for free in exchange for you seeing all their ads and for target marketing. Be sure you get a commitment from a provider that along with a best-in-class service, you’ll also never see banner, text or other advertisements within the application.

Services must be provided through a Software as a Service (SaaS) delivery model, which gives users desktop-like speed and performance from any computer with Internet access or any mobile device, without having to install software programs. Since it would be delivering its service offerings over the Internet, users would likely be willing to pay only a small monthly fee for on-demand use of the software especially taking into account its ad free.

To recap, a Mobile Social Networking aggregation solution specializes in helping individuals and organizations to aggregate the relationship capital built from any social networking site such as MySpace, Facebook, Friendster, LinkedIn, Bebo plus all others including Mobile Social Networking sites. The software enables you to manage, deliver and track social networking activities for fast & easy sharing of video, audio, photos, files, and more in a safe, secure, and private online space.



network management corp

Gregory Smyth asked:


In this world of modern technology, most people prefer not to connect computers with Ethernet cables because excessive cables scattered throughout their office or home is unsightly. You can choose to install a wireless network to avoid excessive cabling. For a wireless network, there is no need to use Ethernet cables to connect your computers to the DSL or router.

Usually, a wireless network broadcast signal uses one or more wireless routers or wireless access points. The access points or router are provided with an aerial and an Ethernet port. The Ethernet port in the access point must be connected to the modem which is provided by your internet service provider, if you need internet access. If you have to move the wireless network to another place, you can simply transfer and install it in your new location easily.

You can also make a combination of wired and wireless connections with an access point or wireless router. The access point functions as the receiver and radio frequency transmitter and can interact with computers, IP Phones, PDAs and other access points having 802.11 wireless adapters. IEEE 802.11 standard of wireless transmission is utilized in a wireless local area network (WLAN). Certain other wireless networking standards such as Bluetooth are available now. However, 802.11 standard is considered as the most effectual networking solution. Actually, the aim of the developers of this network interface was to connect computers through a local area network. However, it has now been changed and a wireless network interface is also used for Voice over Internet Protocol (VoIP) and internet access.

Based on the surveys conducted so far, it is clear that you can stay connected in your network for a long period each day. If you have a laptop with a wireless connection, you can walk around your office with your laptop without losing the connection. Nowadays, certain emergency services are transferring their confidential data through a wireless network. We can consider this as an evidence for the data security which is provided by wireless network. You can send and share data quickly through a wireless network. This is the main reason why businesses and people prefer this network interface for their data sharing. Another important fact regarding wireless networks is that you can connect to the network easily even from the regions which have poor telecom infrastructure.

Some of the main reasons which make the wireless network interface popular include:

i) Convenience as you can use this network interface at home, the office or anywhere else without hassle.

ii) WLANs are available anywhere in the world at an affordable cost.

iii) If you are moving to a new location, you can transfer the interface and install it at your new location easily.

iv) There is no need for an Ethernet cable to connect computers to each other.

For a business, one of the main advantages in setting up a wireless network is savings. You can access the changes in your business in a short period of time after installing the wireless network. There is no need to spend money on cables and other equipments. The cost of maintaining a wireless network is also less when compared to other network interfaces.

Nowadays, you can buy wireless routers at an affordable cost. Also having a wireless network can increase productivity and improve the working environment in your office.

One of the main drawbacks of this network interface is that it may cause health and environmental hazards. Recent researches reported that the constant use of wireless network interfaces may lead to memory loss, poor concentration, premature senility, nausea and even the hazardous disease named cancer. Some environmental hazards that may occur due the constant usage of this interface are also reported. These hazards occur due to electromagnetic radiation coming out of wireless networks.



JESSE

Amichai Lesser asked:


Businesses today are highly dependent on distributed applications to support every aspect of operations. If these applications under-perform for remote users or fail, losses of productivity, revenue and opportunity inevitably result. It is thus critical to ensure the consistent performance of applications across the network.

One of the gating factors controlling application performance is bandwidth. As more applications and services are activated on the network, they contend for the finite available bandwidth. Bandwidth can be an especially critical factor for companies with small or overseas locations that may not have high-capacity network connections to the data center.

Typically, IT organizations approach this critical relationship between application performance and bandwidth by managing supply. This supply-side management approach is characterized by adding more bandwidth or implementing technologies that prioritize use of the bandwidth that’s currently available.

But IT organizations can no longer depend on supply-side bandwidth management alone. Demand — driven by more applications, higher volumes of data and increasing intensity of use — is just growing too fast. Funding for technology infrastructure is growing too slowly. And the consequences of service interruptions are too great. In fact, supply-side management alone fails to address a variety of issues. Some applications aren’t very well designed for deployment on the network, so they won’t perform well, regardless of how much bandwidth you throw at them. Some applications will perform a bit better with more bandwidth, but those incremental performance gains aren’t worth the cost of the additional infrastructure. In some cases, management needs to consider retiring an application altogether. In other cases, steps must be taken to reduce end-user demand.

Simply put, network managers have to do more than just manage bandwidth supply. They have to apply best governance practices to the consumption of bandwidth, so that utilization of network resources is closely aligned with business drivers. Only by exercising this kind of governance can IT use its infrastructure dollars in the most effective possible way.

The Governance Lifecycle

Good bandwidth governance actually begins well before an application is deployed on the network. With the right technologies, developers can start assessing the behavior of their applications over the network early in the design and development stages. That way, they can resolve excessive bandwidth consumption or poor performance issues as soon as they arise, rather than later in the game, when such problems can be very costly to fix.

This kind of testing should continue right up to deployment, so that there are no surprises when the application is rolled out onto the production network. It should also be done every time the application is upgraded or modified, because subtle changes in code often have unexpected impact on the behavior of applications on the network. IT can apply these bandwidth governance best practices to applications that are already in production, too. For example, before throwing bandwidth at an application performance problem, network managers should first model potential solutions to find out if the additional bandwidth will, in fact, deliver expected improvements. What-if scenarios should also be run to answer key governance questions such as “Will current bandwidth levels support the addition of 20 users in our Atlanta office?” and “How will night shift users be affected if we start backing up remote servers over the network at 2:00 AM?”

Only by answering these kinds of questions in advance can network managers ensure that bandwidth is being used for the best possible business purposes.

Bandwidth Governance Best Practices

To achieve best practices bandwidth governance, IT organizations require technology capable of replicating the production network environment as it exists today and as it might look tomorrow. This “virtual enterprise” should be capable of assimilating all the factors that impact application performance in the real world: live applications, the data center that supports them, the topology and bandwidth constraints of the network, the number of distribution of end users, etc.

By leveraging this virtual environment, everyone involved with bandwidth governance — from application designers and QA staff to network managers and architects — can more effectively control bandwidth utilization and preempt potential consumption and performance problems. They can also verify the effectiveness of any planned supply-side measures, such as QoS and bandwidth grooming, they plan to implement in production.

Unfortunately, most IT organizations rely only on development LANs (which don’t reflect conditions on real-world enterprise networks) or mathematical simulations to assess the behavior of applications. These resources are useful, but don’t provide the precision or flexibility necessary for the kind of true bandwidth governance IT will have to implement if it is going to maximize returns on development and infrastructure investments.

That’s why it’s essential that IT organizations re-evaluate their bandwidth management strategies and their technology portfolios. Those that continue to manage application network performance in one silo and application development in another won’t be able to govern bandwidth effectively across the application lifecycle. Only with an accurate, flexible and proactive approach can IT bridge the gap between development and production, and thereby meet its goals of reliable performance, cost-efficient service delivery, and tight alignment of expenditures with business priorities.

To learn more, visit www.shunra.com. Shunra empowers enterprise organizations and technology vendors to eliminate the risks associated with rolling out complex, distributed, applications and services. The Shunra Virtual Enterprise (Shunra VE) solution provides accurate, highly granular insight into how networked applications will function, perform and scale for remote end-users. It creates an exact replica of the production network environment, allowing users to safely develop, test and experiment with applications and infrastructure in a lab environment before deployment in production.



JOAQUIN

Tony Colon asked:


Welcome to the complicated and confusing world of privacy in the information age. Social networks didn’t think there would be any problem; all they do is take available data and aggregate it in a novel way for what they perceive is to its customers’ benefit. Social networks members instinctively understand that making any information easier to display is an enormous difference, and that privacy is more about control than about secrecy.

But on the other hand, social networks’ members are just fooling themselves if they think they can control information they give to third parties. Privacy used to be about secrecy. But clearly, privacy is more complicated than that based on examples and illustrations of privacy and safety breaches that keep pouring in.

It’s about who you choose to disclose information to, how, and for what purpose. And the key word there is “choose”. People are willing to share all sorts of information, as long as they are in control.

However, the reality is that social networks can unilaterally change the rules about how personal information is revealed whenever they want, a vivid reminder to people that they aren’t in control. Often times that declaration is buried in a long privacy policy, and ends with a notice that it can change at any time. How many members ever read that policy, let alone read it regularly and check for changes?

Social Networks Own You

You see, legally, social networks own all data that you upload to the site. They can sell the data to advertisers, marketers and data brokers. They can allow the police to search its databases upon request. They can add new features that change who can access what personal data, and how.

People actually believe they own their data. Even though the user agreements technically give companies the right to sell the data, change the access rules to that data or otherwise own that data.

Members Want Control

The lesson for social networks members might be even more jarring: If they think they have control over their data, they’re only deluding themselves. They can rebel against social networks for changing the rules, but the rules have changed, regardless.

Whenever you put data on a computer, you lose some control over it. And when you put it on the internet, you lose a lot of control over it. It is difficult to aggregate the data from multiple friends into a single place. That’s why every solution out there has failed. When you aggregate information, you aggregate risk by consolidating everything into one spot … it can only makes an identity thief’s life easier for example.

Control is Illusory

Digital data is just too easy to move, copy, aggregate and display. Social network companies are trying to respect privacy challenges by allowing changes to their default settings and by giving users as much control over their personal information as they can. Best intention or moot point? It may be too late for you to decide.

An ideal solution would allow you to be very selective as to whom you bring on board into you very own private network. It would give you complete control as to who, what, when, where, how, and why you share personal information with. It would allow you to build you very own private and secure social network management system.

While the focus of it would be to make the online social networking experiences of users more convenient across the different social network platforms they’re affiliated with, the ultimate goal would be to provide a simpler and easier way for social network users to connect and interact with the most trusted people in their individual “networks”. That way they can keep out the “riff raft”. It would allow them to “separate the wheat from the chaff”.



ALFONZO

shrikant l asked:


i am in networking field have bsc(phy) degree , i want to do master degree which field is better , either go for infrastructure management or any other except MCA

DANNIE

Vanessa W asked:


I am looking to go to college for something in the computers area. I was recommended by one college to take there Computer Network Management Bachelors Degree. I am not sure if it is a good career out there to make money in.

Can anyone help me out?

ALLEN

miss understand me asked:


Do you need to already be good in a particular area to do well in these careers (for example, doctors need to be good at science..)?

Do training/degree programs teach you most of what you need to know….do they prepare you well?

Thanks for any info/advice!

DESMOND